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Adducts and medially rotates the shoulder joint.
Anterior border of lateral 1/3 of clavicle, acromion process, and lower lip of scapular spine.
Serratus anterior protracts and depresses the scapula, while trapezius elevates and retracts it.
It leads to winging of the scapula due to paralysis of the serratus anterior.
Adduction, extension, and medial rotation of the arm.
A fibrous sheath formed by the tendons of four muscles that stabilize the shoulder joint.
Upper impression of the greater tuberosity of the humerus.
Stabilizes the clavicle during shoulder movements.
Adduction, extension, and medial rotation of the arm.
Medial and lateral pectoral nerves.
Infraspinatus primarily laterally rotates the arm, while teres minor also assists in adduction.
Transverse processes of the upper four cervical vertebrae.
More common inferiorly due to lack of support from the rotator cuff.
Retraction and downward rotation of the scapula.
Lesser tuberosity of the humerus.
A pyramidal space between the thoracic wall and the medial side of the arm.
Elevates, retracts, and rotates the scapula.
Axillary nerve.
Protraction and depression of the scapula.
Protects axillary contents and maintains the hollow of the axilla.
Upper 2/3 of the dorsal aspect of the lateral border of the scapula.
Adducts and medially rotates the shoulder joint.
Anterior border of lateral 1/3 of clavicle, acromion process, and lower lip of scapular spine.
Serratus anterior protracts and depresses the scapula, while trapezius elevates and retracts it.
It leads to winging of the scapula.
Adduction, extension, and medial rotation of the arm.
It consists of tendons from four muscles that stabilize the shoulder joint.
Upper impression of the greater tuberosity of the humerus.
It steadies the clavicle during shoulder girdle movements.
Occipital bone, ligamentum nuchae, and spines of thoracic vertebrae.
Teres major adducts and medially rotates the arm, while teres minor laterally rotates it.
Medial and lateral pectoral nerves.
Adduction and lateral rotation of the arm.
It protects the contents of the axilla and maintains its shape.
Subscapularis, teres minor, teres major, and surgical neck of humerus.
Elevation and retraction of the scapula.
Back of the medial border of the scapula from the spine to the inferior angle.
Initiated by the supraspinatus muscle.
It protects the axillary contents and maintains the axilla's shape.
Axillary nerve.
Protraction and depression of the scapula.