Muscles of the Shoulder and Upper Limb (2.2)

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10 Terms

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Supraspinatus
Located above the scapular spine, this muscle stabilizes and abducts the shoulder joint. It originates from the supraspinous fossa and inserts onto the greater tubercle of the humerus
Located above the scapular spine, this muscle stabilizes and abducts the shoulder joint. It originates from the supraspinous fossa and inserts onto the greater tubercle of the humerus
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Subscapularis
This muscle rotates the humerus medially and stabilizes the shoulder. It originates on the anterior surface of the scapula and inserts onto the lesser tubercle of the humerus
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Infraspinatus
Located below the scapular spine, this muscle stabilizes and latterally rotates the shoulder joint. It originates from the infraspinous fossa and inserts onto the greater tubercle of the humerus
Located below the scapular spine, this muscle stabilizes and latterally rotates the shoulder joint. It originates from the infraspinous fossa and inserts onto the greater tubercle of the humerus
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Teres minor
This muscle stabilizes and latterally rotates the shoulder joint. It originates from the lateral boarder of the scapula and inserts onto the greater tubercle of the humerus
This muscle stabilizes and latterally rotates the shoulder joint. It originates from the lateral boarder of the scapula and inserts onto the greater tubercle of the humerus
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Pectoralis major
Thick muscle that internally rotates, adducts, and flexes the arm. It originates from the clavicle, the
lower portion from the sternum,the costal cartilage of the 1st to 6th ribs, and the external oblique muscles, and insets onto the lateral lip of the
intertubercular groove.
Thick muscle that internally rotates, adducts, and flexes the arm. It originates from the clavicle, the
lower portion from the sternum,the costal cartilage of the 1st to 6th ribs, and the external oblique muscles, and insets onto the lateral lip of the
intertubercular groove.
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Latissimus dorsi
Large, triangular muscle that adducts, extends, and internally rotates the arm. It originates from all lumbar and the lower half of the thoracic vertebrae, iliac crest and the sacrum, and inserts onto. the humerus and intertubercle groove
Large, triangular muscle that adducts, extends, and internally rotates the arm. It originates from all lumbar and the lower half of the thoracic vertebrae, iliac crest and the sacrum, and inserts onto. the humerus and intertubercle groove
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Biceps brachii
This muscle flexes the elbow and supinates the forearm. It originates from thecoracoid process and the supraglenoid tubercle, and inserts onto the radial tuberosity.
This muscle flexes the elbow and supinates the forearm. It originates from thecoracoid process and the supraglenoid tubercle, and inserts onto the radial tuberosity.
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Brachialis
This muscle flexes the elbow. It originates on the lower anterior surface of the humerus, and inserts at the coronoid process
This muscle flexes the elbow. It originates on the lower anterior surface of the humerus, and inserts at the coronoid process
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Triceps brachii
Tri-headed muscle that extends the arm. It originated from the humerus and the infraglenoid tubercle, and inserts onto the olecranon
Tri-headed muscle that extends the arm. It originated from the humerus and the infraglenoid tubercle, and inserts onto the olecranon
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Brachioradialis
This muscle flexes the elbow. It originates from the lateral epicondyle and inserts onto the styloid process
This muscle flexes the elbow. It originates from the lateral epicondyle and inserts onto the styloid process