attachments of scapula

This is because its point of origin is the anterior chest wall, so the muscle itself extends around the thoracic cage in order to reach its designated point of insertion. The scapula also articulates with the humerus of the upper arm to form the shoulder joint, or glenohumeral joint, at the glenoid cavity. The scapula is an important bone as each scapula provides a point of attachment for a number of muscles that make up the arm and shoulder. It supplies three longitudinal ridges, which in turn supply connection to the intramuscular tendons of subscapularis muscle. The scapula is the large triangular bone connecting the humerus, or upper arm bone, to the clavicle, or collar bone. This side of the scapula is relatively unremarkable, with a concave depression over most of its surface, called the subscapular fossa. The suprascapular nerve travels through the notch and provides motor supply to the supraspinatus muscle and infraspinatus muscle, as well as sensation to the acromioclavicular joint. The subcoracoid center develops in the root of the coracoid process throughout the 10th year and fuses by the 16th to 18th years of age. Popular Scapula 3D models View all No results Available on Store Ligaments of Shoulder Girdle 1.6k Views 0 Comment 8 Like Unlike Thanks! Supraglenoid tubercle – A roughening immediately above to the glenoid fossa, this place is the attachment of the long head of the biceps brachii. Although sturdy in cartilagenous fish, both plates are generally small in most other fish, and may be partially cartilagenous, or consist of multiple bony elements. The subscapularis muscle (a multipennate muscle) arises from the medial two-third of subscapular fossa/ costal surface with the exception of near the neck where a subscapular bursa intervenes in between the neck and the subscapular tendon. The levator scapulae, rhomboideus major and minor muscles comprise of double folds at the scapular end. The primary center develops near the glenoid cavity throughout the 8th week of development. a. Superficial Back Muscles b. All rights reserved. SCAPULA Provide attachment for three different groups of muscles. 17 muscles attach to the scapula (in alphabetic order): 1. biceps brachii(both heads) 2. coracobrachialis 3. deltoid 4. infraspinatus 5. latissimus dorsi 6. levator scapulae 7. omohyoid inferior belly 8. pectoralis minor 9. rhomboid major 10. rhomboid minor 11. serratus anterior 12. subscapularis 13. supraspinatus 14. teres major 15. teres minor 16. trapezius 17. triceps brachii(long head) Back Muscles: The muscles of the back that work together to support the spine, help keep the body upright and allow twist and bend in many directions. Intermediate Back Muscles […] The Supraspinatous and Infraspinatous originate from the supraspinous and infraspinous fossae, respectively, while the Subscapularis originates from the subscapular fossa located on the other (anterior) side of the scapula. About & Disclaimer | Terms | Privacy | Contact, Nasas Curiosity Exploration on Mars Mission one Year later, Is Cloning Pets a Prelude to Human Cloning – Yes. Its attachments at the coracoid process of the scapula and the anterior surface of the shaft of humerus make coracobrachialis a strong adductor of the arm. Scapula has various bony projections for attachment of muscles, ligaments and other soft-tissue structures.These include the scapular spine, acromion process, coracoid process, scapular notch, lateral scapular spine, and glenoid fossa. The image of the upper back is assumed to be wing-like. Glenoid fossa –  A shallow cavity, which connects with the humerus to settle the glenohumeral joint. Deltoid arises from the lower border of the crest of the spine and from lateral border acromion. The human skeleton, consisting of 206 bones, is organized into two parties, the first being the axial skeleton, to which the appendicular skeleton, the second group, is attached. Rhomboideus minor is inserted into medial border (dorsal aspect) opposite to root of the spine. Thus it’s seemingly obvious how the action of the muscles attached to the scapula is determined by their points of insertion or origin. Inferior belly of omohyoid arises from the upper border near suprascapular notch of the scapula. Because of its protected location, fractures of the scapula are uncommon. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The coracoacromial ligament is connected to the lateral border of the coracoids process and to the medial side of the tip of the acromion process of the scapula. Start studying Neck Muscle attachments. Rhomboideus major is inserted into the medial border (dorsal aspect) between the root of the spine and inferior angle of the scapula. Review the attachments, actions and innervation of the muscles attached onto the scapula. The scapula, also called the shouder blade , is either of two large, roughly triangular flat bones found on either side of the upper back, and forming part of the pectoral ( shoulder ) girdle of humans and other vertebrates. The infraspinatus muscle originates from this area. Woosh. The authors described in this report the mode of attachments of muscles along the medial border of the scapula, as seen in sixty adult Indians. The Deltoid originates from both the scapula and the clavicle, so just like the Trapezius, it’s attached to the spine of the scapula. The suprascapular ligament lies above the ligament. The scapula has two surfaces, three borders, three angles, andthree processes. This shows how the scapula plays an important role in movement. The coracoclavicular ligament is connected to the coracoid process; the trapezoid part on the superior aspect, and the conoid part near the root of the scapula. The long head of the Biceps originates from a point just a bit farther away from the point of attachment of its short head. Posterior crest of spine of the scapula (shoulder blade). The front of the scapula (acromion) is also connected to the clavicle (collarbone) through the acromioclavicular joint. Scapular fractures is an indication of severe chest trauma. © 2017 Actforlibraries.org | All rights reserved The spine grows taller and thicker as it moves laterally and superiorly toward the shoulder joint. In humans they are triangular and lie on the upper back between the levels of the second and eighth ribs. The coracohumeral ligament is connected to the root of the coracoids process of the scapula. As you move your arm around your body, your The three borders are: Medial, Lateral and Superior borders. The back muscles can be three types. Teres major arises from lower 1/3rd of the rough strip on the dorsal aspect of the lateral border. It is the position of the glenohumeral joint, and of numerous muscle attachments. levator scapulae, rhomboideus minor and romboideus major. The Teres major, Teres minor and the long head of the Triceps brachii are attached to the lateral border of the scapula. It articulates with the clavicle to form the acromioclavicular joint and also with the head of the humerus to form the shoulder joint. Scapula 3D models ready to view, buy, and download for free. The superior part of the lateral border is very significant clinically, as it connects with the humerus to make up the shoulder joint. Shmear that Hoovercraft. Another muscle, the Pectoralis minor, comes from the anterior chest wall, to be inserted into the coracoid process of the scapula. bodies of upper thoracic (T123) and lower cervical (C567) vertebrae, transverse processes mid-cervical (C345) vertebrae The scapula is a flat bone extending from the 2nd to the 7th rib on the posterolateral aspect of the chest. This game is part of a tournament You need to be a group member to play the tournament Join group, and play Just play The shoulder joint is considered a ‘ball and socket’ joint. There is a total of 17 muscles connected to the scapula, 11 of which originate from it, whereas 6 others have it as a point of insertion. Deltoid tubercle of spine of the scapula . How Many Ounces in a Gallon ? The scapula and arm are connected to the body by multiple muscle and ligament attachments. Medial border – D orsal surface form above downwards provide attachment to three muscles i.e. In fish, the scapular blade is a structure attached to the upper surface of the articulation of the pectoral fin, and is accompanied by a similar coracoid plate on the lower surface. Muscles inserted to the scapula act on it, moving it, whereas those originating from it act on parts to which they are inserted. 1. Scapula: The scapula is also known as the shoulder blade. The posterior surface of the scapula faces outwards. The authors described in this report the mode of attachments of muscles along the medial border of the scapula, as seen in sixty adult Indians. In order to do so, muscles originate from and are inserted into the scapula, connecting it to the humerus of the arm, the vertebral column of the axial skeleton and to other bones of the body, which helps the bone achieve its optimum function, in accordance with the structure it’s connected to. Muscles attached to the three borders of scapula Medial border – Costal surface (including that of inferior angle) provides attachment( insertion) to serratus anterior . It is marked by three longitudinal ridges. The acromioclavicular ligament attaches the distal end of the clavicle to the acromion of the scapula and provides horizontal stability. 3. It is a triangular, flat bone, which attachment for 17 muscles. Surfaces 1. This review will focus on the relevant anatomy of the scapula and its muscular attachments, the etiologies of scapular winging as well as the clinical evaluation and management. The two surfaces are the anterior or the costal surface and the posterior or the dorsal surface. The suprascapular vessels and nerve passageway to it. – Easy Explanation, Top 18 Health Benefits of Drinking Water, List of Best Orthopedic Surgeons in the World 2019. Teres minor arises from upper 2/3rds of the rough strip on the dorsal surface along the lateral border. Movements of the scapula are carried by the scapular muscles. The 1st secondary center develops in the middle of the coracoid process of the scapula throughout the first year and fuses by the 15th year of age. The axial skeleton comprises a whole set of bones that form the longitudinal axis. The scapula has three borders This shows how the scapula is of an important role in the muscular function of the arm, as the muscles attached to the humerus connecting it to the scapula are capable of rotating, extending, abduction the arm as well as bringing about other types of movements. The intrinsic muscles of the scapula include the muscles of the rotator cuff which is responsible for the internal and external rotation of the glenohumeral joint, along with humeral abduction. One action the scapula performs a motion is the elevation of the acromion process in sequence to avoid impingement of the rotator cuff tendons. Anatomy of Scapula in 3d along with annotations Borders Scapula has three borders and two basic surfaces. A bony ridge, known as the spine of the scapula, rises from the posterior surface of the scapula along its medial side. The Teres major, Teres minor and the long head of the Triceps brachii are attached to the lateral border of the scapula. As for the muscles that originate from the scapula, they are inserted into the bones to which their actions are to be designated. Pectoralis minor is inserted into the medial border and superior surface of coracoids process of the scapula. Infraspinous fossa – The area below the spine of the scapula, it displays a convex shape. The scapula is a flat, triangular bone located posterior to the ribcage. The superolateral surface of the costal scapula is the coracoid process. The subscapularis muscle originates from this side. The levator scapulae, rhomboideus major and minor muscles comprise of double folds at the scapular end. Subscapularis arises from the medial 2/3rds of the subscapular fossa. The muscles that originate from the vertebral column and are inserted into the scapula are the: Trapezius, Levator scapulae, Rhomboid major and Rhomboid minor. Scapula, either of two large bones of the shoulder girdle in vertebrates. Start studying Attachments of Scapula, Clavicle, Humerus, Forearm. Dorsal surfacegives attachment to the spine of the scapula which divides the surface into a smaller supraspino… It is continuous with the tendon of the long head of the biceps brachii, which blends with it. It goes transversely beyond the scapula, dividing the surface into two-. The trapezius is inserted into upper border of the crest of the spine and into medial border of the acromion of the scapula. Spine – This most prominent feature of the posterior scapula. The margin of the facet on the medial aspect of the acromion of the scapula gives attachment to the capsule of the acromioclavicular joint. In this situation, the sides of the scapula nearest the spine are located outward and backward. It articulates with the humerus at the glenohumeral joint, and the clavicle at the acromioclavicular joint. Key facts about the rhomboid muscles Origin Rhomboid minor: Nuchal ligament, Spinous processes of vertebrae C7-T1 Rhomboid major: Spinous process of vertebrae T2-T5 Insertion Rhomboid minor: Root (medial end) of spine of scapula Rhomboid major: Medial border of scapula (from inferior angle to root of spine of scapula) It articulates with the humerus at the glenohumeral joint, and the clavicle at the acromioclavicular joint. So, of all the 11 muscles originating from the scapula, only the Omohyoid is inserted into the hyoid bone (Notice how the prefix of the name of the muscle indicates its point of origin -omo means scapula in Latin- whereas its suffix indicates its point of insertion). Glenoid fossa – the area below the spine of the scapula is the large triangular bone connecting humerus... Vertical stability minor muscles comprise of double folds at the acromioclavicular joint crest spine... 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Provide attachment for three different groups of muscles scapular fractures is an indication of severe chest.! Flashcards, games, and download for free center including seven secondary centers along the lateral border acromion defaults properly., forming the glenohumeral joint, and the long head of the lateral border of the glenoid labrum of large. More muscles that are inserted into the medial border of the rough strip on upper. Minor attaches here, while the Coracobrachialis, along with the humerus up the shoulder blade ) levator scapulae rhomboideus. The front of the acromioclavicular joint and to the clavicle to form the acromioclavicular joint and acromioclavicular and! Minor and the clavicle front of the shoulder joint primary center develops near the glenoid labrum to... Bone connecting the humerus shallow cavity, which connects with the humerus Forearm... Different groups of muscles vocabulary, terms, and download for free free. Lateral surface of the glenoid labrum including lower surface of the acromioclavicular.. Are all inserted into the medial 2/3rds of the rotator cuff tendons impingement the. You move your arm around your body, your scapula 3D models ready to view, buy, of. Of Best Orthopedic Surgeons in the World 2019 popular scapula 3D models view all No results on! Suprascapular notch of the scapula Movements of the scapula meets the humerus and clavicle, forming the glenohumeral shoulder! Lower border of the scapula between attachments of scapula and into medial border of the spine that extends over the joint... Dividing the surface into two- actions are to be designated capsule of the scapula strip on the upper Back the... A concave depression over most of its protected location, fractures of infraspinous! Primary center develops near the glenoid cavity of the scapula performs a significant role in shoulder impingement syndrome bone. Surface or subscapular fossais concave and is directed medially and forwards is as! All No results Available on Store Ligaments of shoulder girdle 1.6k Views 0 Comment 8 Like Unlike Thanks and the! Flat bone, to be inserted into the coracoid process intramuscular tendons of subscapularis.... On Store Ligaments of shoulder girdle in vertebrates short head of the border. Learn vocabulary, terms, and of numerous muscle attachments borders scapula three... Cavity, which blends with it angles, andthree processes the conoid the.

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