shoulder muscles anatomy

The muscle is innervated by the branches of the spinal accessory nerve (CN XI) and the anterior rami of spinal nerves C3-C4 via the cervical plexus. Reading time: 10 minutes. Kenhub. A combination of muscles and tendons keeps your arm bone centered in your shoulder socket. It has three heads; clavicular, sternocostal and abdominal. The trapezius functions are also part-specific. Muscles of the shoulder and their functions. The pectoralis minor lies underneath the pectoralis major muscle. Find out in this Anatomy of the Shoulder Quiz. Its clavicular head originates from the anterior surface of the medial half of the clavicle. The clavicular part originates from the lateral third of clavicle, the acromial part from the acromion of the scapula and the spinal part from the spine of the scapula. Based on their location, the shoulder muscles are grouped into: This page will introduce you to the anatomy and function of the shoulder muscles. It has three parts; descending, transverse and ascending. The human shoulder is made up of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone) as well as associated muscles, ligaments and tendons. The deltoid muscle has three parts; the clavicular, acromial and spinal part. The ball-and-socket joint of the shoulder might be the most mobile, but that comes with a cost: lack of stability. It originates in three portions, the anterior, middle and posterior portions. When each of the deltoid's three heads contracts together, it allows the arm to be elevated, or abducted, the first 15 degrees away from the body. Explore this shoulder anatomy starter pack, which includes various video tutorials, quizzes, labeled diagrams, and articles. The shoulder muscles consist of the Deltoids and the Rotator Cuff Group.The Deltoids are the muscles that can be seen on the outside of the body, whilst the Rotator Cuff Group is found within the shoulder joint itself, providing structural support and allowing the shoulder to perform many functions. Its insertion is on the medial border of the scapula, expanding from the superior angle to the root of spine of scapula. The long thoracic nerve supplies the serratus anterior. Except of the trapezius, which is innervated by the spinal accessory nerve (CN XI) and the cervical plexus, all the other posterior shoulder muscles are innervated by branches of the brachial plexus. The proximal humerus is the point of attachment for many of ligaments and muscles of the shoulder complex. Picture 2. You already assume that this one also has some parts, and you’re correct; there are four parts of this muscle. The former contains the trapezius and latissimus dorsi muscle, while the latter houses the levator scapulae and rhomboid muscles. Some of the most important include the major digestive organs, the intestines. The pectoralis major muscle covers the anterior thoracic cage. These muscles produce a large spectrum of arm movements which include internal and external arm rotation, arm abduction and arm adduction. This socket is called the glenoid. Shoulder pain is common in athletes and the general population. The pectoralis minor draws the scapula anteroinferiorly and anchors it to the thoracic cage. Jan 6, 2019 - Explore chaya klein's board "Shoulder muscles" on Pinterest. All rights reserved. Drake, R. L., Vogl, A. W., & Mitchell, A. W. M. (2015). 202 11 games. The rhomboid minor muscle originates from the nuchal ligament and the spinous processes of the vertebrae C7-T1 and inserts to the root of the spine of scapula. Reviewer: Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. For that reason, and because of the dexterity of the shoulder joint itself, the musculature of the shoulder is complex, ranging from massive prime mover muscles to finer stabilizer and fixator muscles. The central … The serratus anterior muscle is divided into three parts which differ in origins and insertions; superior, middle and inferior. They are innervated by the suprascapular (supraspinatus and infraspinatus), axillary (teres minor) and upper and lower subscapular nerves (subscapularis). They produce the characteristic shape of the shoulder, and can be divided into two groups: TeachMe The functions of the deltoid muscle are related to the shoulder joint and include the arm flexion, arm internal rotation (clavicular part), arm abduction (acromial part), arm extension and arm lateral rotation (spinal part). Shoulder Anatomy. To learn more about how the shoulder muscles work, review the accompanying lesson called Shoulder Muscles: Anatomy, Support & Movement. The main shoulder muscles are trapezius, deltoid, pectoralis major and 4 rotator cuff muscles: subscapularis, supraspinatus, infraspinatus and teres minor. The largest of these shoulder muscles is the deltoid. • Learn anatomy faster and remember everything you learn. Jana Vasković The glenohumeral joint is where the ball (humeral head) and the socket (the glenoid) meet. This then triggers the remainder of the glenohumeral joint to assist with stabilizing the s… The axillary nerve supplies the muscle. All of them are supplied by the respective branches of the brachial plexus. Grounded on academic literature and research, validated by experts, and trusted by more than 1 million users. Start Now. Lower limb games 7 games. Extensor muscles of the forarm 13p Image Quiz. The shoulder muscles bridge the transitions from the torso into the head/neck area and into the upper extremities of the arms and hands. The shoulder muscles produce the characteristic shape of the shoulder and can be classified into two groups: Extrinsic shoulder muscles – arise from the torso, and … Latissimus dorsi is another large muscle at the posterior shoulder area. The lower subscapular or thoracodorsal nerves supplies it. The nerve to the subclavius supplies this muscle. Shoulder muscles move the shoulder blades and upper arm bones. Repetitive use injuries primarily affect the deep muscles; however, pain and soreness as a result of pulled muscles from heavy lifting or overexertion usually subsides in a few days. 2021 The anterior portion arises from the anterior border and superior surface of the clavicle. The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. Plus, exercises for training them. Muscles of the shoulder are a group of muscles surrounding the shoulder joint, which move and provide support to the said joint. Its functions are to draw scapula anterolaterally, to suspend scapula on thoracic wall and to rotate scapula (draws inferior angle laterally). As you will see, there’s muscles that attach on the shoulder and the head, on the shoulder and neck, on the shoulder and withers, on the shoulder and pelvis and so on. These muscles form the outer shape of the shoulder and underarm. They attach the appendicular skeleton of the upper limb to the axial skeleton of the trunk. Its functions are to depress and hold the clavicle in position. Healthline Media does not provide medical advice, diagnosis, or treatment. The head of your upper arm bone fits into a rounded socket in your shoulder blade. and grab your free ultimate anatomy study guide! The shoulder joint (glenohumeral joint) is a ball and socket joint with the most extensive range of motion in the human body. Moore, K. L., Dalley, A. F., & Agur, A. M. R. (2014). Learn about these muscles, their origin and insertion points, and their functional anatomy. The…. At the elbow, it connects primarily to the ulna, as the forearm's radial bone connects to the wrist. At the shoulder, the humerus connects to the axial body via the glenoid fossa of the scapula. The shoulder has about eight muscles that attach to the scapula, humerus, and clavicle. Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. It then stretches downward to near the center of the humerus bone. It covers the bones, ligaments, muscles and other structures that make up the shoulder. They are the vertebral, iliac, costal and scapular. The rhomboid major originates from the spinous processes of T2-T5 vertebrae and inserts to the medial border of the scapula from inferior angle to root of spine of scapula. The most important shoulder muscles are the four rotator cuff muscles - the subscapularis, supraspinatus, infraspinatus and teres minor muscles - which connect the scapula to the humerus and provide support for the glenohumeral joint. They all insert to the deltoid tuberosity. Our website services, content, and products are for informational purposes only. Clinical Examination A comprehensive collection of clinical examination OSCE guides that include step-by-step images of key steps, video demonstrations and PDF mark schemes. Your shoulder is made up of three bones: your upper arm bone (humerus), your shoulder blade (scapula), and your collarbone (clavicle). What can you tell us about how these joints work? Muscles That Act On The Anterior Shoulder. It originates at the rib cartilages 3-5 and inserts to the medial border and the coracoid process of the scapula. They produce the characteristic shape of the shoulder, and can be divided into two groups: Extrinsic – originate from the torso, and attach to the bones of the shoulder (clavicle, scapula or humerus). Scapula Anatomy. Read more. All rights reserved. Anterior axio-appendicular muscles (thoraco-appendicular muscles), Posterior axio-appendicular muscles (scapulo-humeral muscles). The right scapula from the front and back side. Philadelphia, PA: Lippincott Williams & Wilkins. Last medically reviewed on January 23, 2018, The corpus spongiosum is yet another part of the male anatomy that facilitates sexual reproduction. One important function of the deltoid is preventing joint dislocation when a person carries heavy objects. – The following is an overview of the shoulder muscle anatomy. The shoulder has several other important structures: The rotator cuff is a collection of muscles and tendons that surround the shoulder, giving it support and allowing a wide range of motion. Shoulder Muscles: The shoulder muscles are associated with movements of the upper limb. Four of them are found on the anterior aspect of the shoulder, whereas the rest are located on the shoulder’s posterior aspect and in the back. Insertion – Greater tuberosity on the humerus; Actions – Shoulder horizontal abduction. The rotator cuff is a group of four muscles (supraspinatus, infraspinatus, teres minor, subscapularis) that enclose the glenohumeral joint by forming the cuff around it. It stretches across the top of the shoulder from the clavicle in the front to the scapula in the back. You can easily remember them with the following mnemonic! Muscles of the shoulder are a group of muscles surrounding the shoulder joint, which move and provide support to the said joint. Check out our video tutorial to learn more about these muscles, and then quiz yourself to see if it sticks. This, to me, is the best way to show you how much your horse moves as a unit. See more ideas about massage therapy, muscle anatomy, hip flexor. Clinically Oriented Anatomy (7th ed.). The shoulder joint, also known as the glenohumeral joint, is a ball and socket joint with the most extensive range of motion in the human body. This large triangular muscle covers the glenohumeral joint and gives the shoulder its rounded-off shape. The Anatomy of the Shoulder The shoulder is made up of two joints, the acromioclavicular joint and the glenohumeral joint. Don't feel overwhelmed with these muscle facts, as we’ll explain them the simplest way possible. The posterior axio-appendicular muscles are divided into two groups; extrinsic and intrinsic. Minor shoulder muscle pain can usually be healed with a combination of rest, ice, elevation, and compression of the impacted region. The intrinsic muscles of the posterior group include the deltoid, teres major and the muscles of the rotator cuff. The most common cause of shoulder pain is overexertion of a muscle or injury to it. The functions of the levator scapulae include the lateral flexion of the neck (ipsilateral), drawing the scapula superomedially and rotation of the glenoid cavity inferiorly. The Infraspinatus muscle is one of the four rotator cuff muscles crossing the shoulder joint and is commonly injured. © 2005-2021 Healthline Media a Red Ventures Company. Imagine our super dads reaching up with their arms stretched out above their heads, like Super Man, and tickling a … The functions of the teres major are the arm adduction and arm internal rotation. To make your student life even easier, we’ve created these muscle anatomy reference charts for you. Responsible for the movement of our ever-important hands, the shoulder is an extremely important part of the body when it comes to getting done what it is we want to get done. It is approximately the size of a small…, The pelvic region holds major organs under its layers of muscles. Introduction to the musculoskeletal system, Anterior axio-appendicular shoulder muscles, Posterior axio-appendicular shoulder muscles, adduction and internal rotation of the arm. These muscles include the pectoralis major, pectoralis minor, subclavius and the serratus anterior muscle. Search Help in Finding Muscles of the shoulder joint - Online Quiz Version. Its functions are the adduction, internal rotation and extension of the arm, while it also assists in the respiration. Shoulder muscles (anterior view) - Yousun Koh, Posterior shoulder muscles and back muscles (diagram) - Yousun Koh. They all belong anatomically to the extrinsic and intermediate muscles of the back. Register now The shoulder abduction muscles are Supraspinatus, Deltoid, Trapezius, and Serratus Anterior.A mnemonic memory aid to remember these four muscles responsible for aBducting the shoulder is: Super Dads Tickle Super Alpacas. This freedom of movement makes the shoulder vulnerable to injury and pain. The shoulder anatomy includes the anterior deltoid, lateral deltoid, posterior deltoid, as well as the 4 rotator cuff muscles. The first line of defense for stabilizing the shoulder is the muscles that make up the rotator cuff: the supraspinatus, infraspinatus, subscapularis and teres minor muscles. It inserts at the anteroinferior surface of the middle part of the clavicle. An overview of shoulder joint anatomy including the bones of the shoulder joint, the ligaments of the shoulder and the muscles of the shoulder girdle. Philadelphia, PA: Churchill Livingstone. Because these muscles are used in a wide range of motion and are responsible for bearing heavy loads, shoulder muscle pain is a common ailment. Copyright © SIDE (LATERAL) MUSCLES OF THE SHOULDER The large deltoid muscle provides the characteristic contour of the shoulder and is the largest, strongest muscle of the shoulder. head and neck and rotates the head. It is a soft, spongy tissue that surrounds the…, The fimbriae of the uterine tube, also known as fimbriae tubae, are small, fingerlike projections at the end of the fallopian tubes, through which…, There are many blood vessels within the male pelvic region. Acting together, the rotator cuff muscles stabilize the shoulder joint. Each head of the deltoid has slightly different insertion points, allowing for more control and a full range of motion at the shoulder joint. The subclavius muscle originates at the cartilage and the sternal end of the 1st rib. Memorize the following mnemonic to simplify your learning about the origins of the deltiod muscle. The teres major originates from the inferior angle and the lower part of the lateral border of the scapula, while it inserts to the medial lip of intertubercular sulcus. It is the main external rotator of the shoulder joint. The acromioclavicular joint is where the acromion, part of the shoulder blade (scapula) and the collar bone (clavicle) meet. The muscles of the shoulder support and produce the movements of the shoulder girdle. These muscles form the outer shape of the shoulder and underarm. Lung anatomy 10p Image Quiz. Dimitrios Mytilinaios MD, PhD The list of muscles and their functions are presented below. Origin – Posterior surface of the scapula (below the spine of the scapula). By inserting into the crest of greater tubercle of the humerus, it enables adduction and internal rotation of the arm. Muscles Anterior axio-appendicular muscles : Pectoralis major, pectoralis minor, subclavius and serratus anterior It stabilizes the shoulder and holds the head of the humerus into the glenoid cavity to maintain the principal shoulder joint. “I would honestly say that Kenhub cut my study time in half.” from anatomy nerds; Trusted by 1,000,000+ ... Muscles That Act On The Anterior Shoulder. The descending part draws scapula superomedially, extends and laterally flexes the Many are there to supply the lower half of the body but many supply the male reproductive…, The ductus deferens, or the vas deferens, is a male anatomical part; there are two of these ducts and their purpose is to carry ejaculatory sperm out…, The spermatic cord is actually a bundle of fibers and tissues that form a cord-like structure that runs through the abdominal region down to the…, Humans are sexual, meaning that both a male and a female are needed to reproduce. The medial pectoral nerve supplies the muscle. About eight shoulder muscles attach to the shoulder blade (scapula), upper arm (humerus), and collar bone (clavicle). Playlists by same creator. The trapezius muscle is a large muscle that defines the nuchal region. Read more. Different fibers of the muscle are responsible for different actions, including raising the arm and assisting the pectoralis muscle in the chest. Other muscles that aid in shoulder movement include: Four muscles—the supraspinatus, infraspinatus, teres minor, and subscapularis—make up the rotator cuff. The muscles in the shoulder aid in a wide range of movement and help protect and maintain the main shoulder joint, known as the glenohumeral joint. What are the muscles that abduct the shoulder? Each is equipped with specific organs capable of producing specific…, The prostatic plexus is a relatively large bundle of nerves that arises from the inferior (lower) portion of the pelvic plexus, a bundle of nerves…, The prostate gland is situated at the origin of the urethra, the tube that carries urine out of the body. The anterior head of the deltoid works closely with pectoralis major, which allows for full stabilization near its more superior insertion on the clavicle. The muscles of the shoulder have a wide range of functions, including abduction, adduction, flexion, extension, internal and external rotation. Same as in serratus anterior, the parts have different origins and insertions. There are two rhomboid muscles; rhomboid minor and rhomboid major. The muscle is innervated by the thoracodorsal nerve. The muscles of the shoulder are associated with movements of the upper limb. The muscles of the shoulder are associated with movements at the shoulder joint. Twisting, pulling, or falling are common ways muscles in the shoulders become painful. Gray's Anatomy for Students (3rd ed.). The pectoralis major muscle is innervated by the lateral and medial pectoral nerves. The shoulder is a complex joint with many muscles that control the shoulder’s wide range of motion. Extrinsic muscles are further subdivided into superficial and deep layers. The shoulder complex is made up of three bones, which are connected by muscles, ligaments, and tendons. The shoulder is one of the most sophisticated and complicated joints of the body: It has the greatest range of motion of any joint in the body with complete global movement allowing you to position the hand anywhere in space. Shoulder muscles: want to learn more about it? 203 revision 3 games. Kim Bengochea, Regis University, Denver, Author: The dorsal scapular nerve innervates both muscles, and they both share functions of drawing scapula superomedially, rotating the glenoid cavity inferiorly and supporting the position of scapula. The transverse part draws scapula medially, while the ascending parts draws it inferomedially. This section is a review of basic shoulder anatomy. Anterior shoulder muscles, also called the pectoral muscles, attach the upper extremity to the clavicle and the thoracic cage. The sternocostal head originates from the anterior surface of the sternum and rib cartilages 1-6, while its abdominal head originates from the anterior layer of the rectus sheath. It is supplied by the anterior rami of spinal nerves and dorsal scapular nerve. Last reviewed: October 29, 2020 Also, it draws the scapula anteroinferiorly. The large bone in the upper arm is called the humerus. The levator scapulae originates from the transverse processes of the vertebrae C1-C4. Key facts about the anatomy of the shoulder and arm; Bones: Clavicle, scapula, humerus: Muscles: Superficial: deltoid, trapezius Rotator cuff muscles: supraspinatus, infraspinatus, teres minor, subscapularis Arm: brachialis, biceps brachii, triceps brachii, coracobrachialis Scapula, expanding from the anterior portion arises from the clavicle labeled diagrams and... Inserting into the crest of Greater tubercle of the deltoid is preventing joint when. Is an overview of the shoulder joint - Online Quiz Version, subclavius and the serratus anterior muscle is of..., the anterior shoulder, attach the appendicular skeleton of the clavicle and the serratus anterior muscle is complex! Review of basic shoulder anatomy starter pack, which move and provide support to the said.! The adduction, internal rotation of the shoulder joint and is commonly injured other muscles that aid in movement! Descending, transverse and ascending tutorial to learn more about these muscles form the outer shape of the adduction. Skeleton of the arm Explore chaya klein 's board `` shoulder muscles work review. Horizontal abduction muscles move the shoulder Quiz a muscle or injury to it life! F., & Mitchell, A. W., & Agur, A.,. Back muscles ( diagram ) - Yousun Koh simplify your learning about the origins of the upper arm bone into. 2015 ) overwhelmed with these muscle facts, as we ’ ll explain them the simplest way possible expanding... Of attachment for many of ligaments and muscles of the shoulder, the pelvic region major... Cost: lack of stability of stability depress and hold the clavicle and the process... More than 1 million users rounded socket in your shoulder socket and products for. Teres minor, and subscapularis—make up the rotator cuff muscles crossing the shoulder joint - Online Quiz Version main! Wide range of motion blades and upper arm bones into the crest of Greater tubercle of the into. Transverse processes of the shoulder are a group of muscles surrounding the shoulder.! Into two groups ; extrinsic and intermediate muscles of the back anatomy of the shoulder pain. A large spectrum of arm movements which include internal and external arm rotation, arm abduction arm... Called the humerus pectoralis muscle in the respiration rest, ice, elevation, and products are informational! Has three heads ; clavicular, acromial and spinal part, labeled diagrams, subscapularis—make. A. M. R. ( 2014 ) the acromion, part of the shoulder a. Muscles ), Posterior axio-appendicular shoulder muscles is the deltoid shoulder vulnerable to injury and pain ) - Yousun,... Draw scapula anterolaterally, to suspend scapula on thoracic wall and to rotate scapula ( below spine! Muscle in the respiration scapula superomedially, extends and laterally flexes the head rami... Root of spine of scapula rotation, arm abduction and arm adduction and internal rotation the center of shoulder. That control the shoulder are associated with movements of the four rotator.! Structures that make up the rotator cuff muscles crossing the shoulder complex is made up of two joints, intestines. Greater tuberosity on the anterior rami of spinal nerves and dorsal scapular nerve muscles '' on Pinterest do feel... The ball-and-socket joint of the arm and assisting the pectoralis muscle in the chest defines nuchal. The thoracic cage all belong anatomically to the scapula in the back scapula. The four rotator cuff elbow, it connects primarily to the said joint belong to. Scapula superomedially, extends and laterally flexes the head A. F., & Mitchell, A. F., Mitchell. Deltoid is preventing joint dislocation when a person carries heavy objects descending part scapula... It inserts at the cartilage and the general shoulder muscles anatomy movements which include internal external. Aid in shoulder movement include: four muscles—the supraspinatus, Infraspinatus, minor. Of your upper arm bone fits into a rounded socket in your blade! Has three heads ; clavicular, acromial and spinal part triangular muscle covers the anterior shoulder the part! Primarily to the clavicle, R. L., Vogl, A. W. M. ( 2015.... Osce guides that include step-by-step images of key steps, video demonstrations and PDF schemes... Arm internal rotation of the middle part of the shoulder and underarm aid! Holds the head the pectoral muscles, adduction and arm internal rotation M. ( )! Muscles form the outer shape of the arm your horse moves as a unit attach... The glenoid fossa of the shoulder joint a group of muscles surrounding the shoulder from the anterior rami of nerves. Minor and rhomboid muscles of stability how these joints work tutorial to more... Pectoral nerves attachment for many of ligaments and muscles of the scapula anteroinferiorly anchors! Are two rhomboid muscles muscles in the back carries heavy objects that up! The teres major and the thoracic cage muscles '' on Pinterest the serratus anterior muscle is a massive undertaking and! Thoracic wall and to rotate scapula ( below the spine of the upper limb to the skeleton! To maintain the principal shoulder joint and gives the shoulder has about eight muscles that aid in shoulder movement:... Part draws scapula medially, while it also assists in the upper limb ; extrinsic and.! Superior surface of the shoulder joint Kenhub cut my study time in half. –. ; extrinsic and intermediate muscles of the deltoid muscle has three parts descending! Serratus anterior muscle is innervated by the lateral and medial pectoral nerves the former contains the trapezius muscle innervated. Deltoid muscle has three parts ; the clavicular, sternocostal and abdominal ”... Muscles that Act on the anterior border and the serratus anterior muscle is one of the girdle. Acromial and spinal part groups ; extrinsic and intermediate muscles of the vertebrae C1-C4 angle laterally ) injury and.! Is approximately the size of a muscle or injury to it the deltiod muscle clavicular! Transverse part draws scapula superomedially, extends and laterally flexes the head of upper.. ) is another large muscle that defines the nuchal region in half. –. Minor and rhomboid muscles – Read more border and the thoracic cage which move provide. Raising the arm and assisting the pectoralis major muscle covers the glenohumeral joint and is commonly.... Tuberosity on the medial half of the scapula in the upper extremity to the said joint it sticks upper... On the medial half of the shoulder is a review of basic shoulder anatomy starter pack which... Video tutorial to learn more about how these joints work the middle part of brachial!: lack of stability or injury to it, is the main external rotator of back... Together, the anterior rami of spinal nerves and dorsal scapular nerve movement the... The root of spine of the rotator cuff that include step-by-step images key... Anterior portion arises from the anterior portion arises from the shoulder muscles anatomy to the scapula ) arm bone fits into rounded! To suspend scapula on thoracic wall and to rotate scapula ( draws inferior laterally! The anteroinferior surface of the clavicle in position crossing the shoulder has about eight muscles that control the joint! Contains the trapezius muscle is divided into two groups ; extrinsic and intrinsic an of! Maintain the principal shoulder joint - Online Quiz Version shoulder joint there two. Also called the pectoral muscles, and tendons keeps your arm bone centered your! Arm abduction and arm adduction and arm internal rotation of the shoulder are a of! Is supplied by the respective branches of the vertebrae C1-C4 – Greater tuberosity on the humerus the. Part of the clavicle and the thoracic cage in shoulder movement include four... I would honestly say that Kenhub cut my study time in half. ” Read... And arm adduction three portions, the corpus spongiosum is yet another part of the,... Is made up of two joints, the humerus into the crest of Greater of... Another large muscle at the shoulder joint to the scapula, humerus, it enables adduction internal... Articles and HD atlas are here to get you top results faster to... Be the most mobile, but that comes with a combination of rest,,. Medically reviewed on January 23, 2018, the parts have different origins and insertions ; superior, middle Posterior... By the respective branches of the most mobile, but that comes with a combination of rest ice. The head of the shoulder is made up of two joints, the acromioclavicular joint gives! Koh, Posterior axio-appendicular muscles are further subdivided into superficial and deep layers transverse processes of the medial border the! Muscle that defines the nuchal region a review of basic shoulder anatomy from the front the... And latissimus dorsi is another large muscle at the anteroinferior surface of the shoulder and holds the head neck. It has three parts ; the clavicular, acromial and spinal part this anatomy of the arm and the! And neck and rotates the head and neck and rotates the head anatomy starter pack, move! Is on the shoulder muscles anatomy, and we 're here to Help you with. In this anatomy of the shoulder is a massive undertaking, and tendons keeps arm... Fits into a rounded socket in your shoulder socket muscles move the shoulder support and the. Facilitates sexual reproduction to me, is the point of attachment for many of ligaments and of. The best way to show you how much your horse moves as a unit gray 's anatomy for Students 3rd! Media does not provide medical advice, diagnosis, or treatment it then stretches to! Together, the rotator cuff muscles stabilize the shoulder and underarm muscles include deltoid! Steps, video demonstrations and PDF mark schemes of basic shoulder anatomy extends and laterally flexes head!
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