Muscles Innervated by Axillary, Dorsal Scapular, and Pectoral Nerves: Anatomy and Function

Which muscle is innervated by the axillary nerve?

Deltoid (an)

Which muscle inserts into the intertubercular sulcus of the humerus and helps adduct and medially rotate the arm?

Latissimus dorsi

Which muscle originates from C7-T1 and inserts on the medial border of the scapula?

Rhomboid minor

Which muscle elevates and downwardly rotates the scapula?

Levator scapulae

Which muscle originates from the spines of T2-T5?

Rhomboid major

Which muscle flexes, horizontally adducts, and medially rotates the arm?

Pectoralis major

Which muscle inserts into the deltoid tuberosity of the humerus?

Deltoid

Which muscle originates from the transverse processes of C1-C4?

Levator scapulae

Which muscle is innervated by the dorsal scapular nerve (C5) and retracts the scapula?

Rhomboid major

Which muscle inserts into the coracoid process and can depress the scapula?

Pectoralis minor

Which muscle originates from the iliac crest, spinous processes of T7-T12, and ribs 9-12?

Latissimus dorsi

Which muscle adducts, extends, medially rotates the arm, and depresses the scapula?

Latissimus dorsi

Which muscle originates from the external occipital protuberance, ligamentum nuchae, and spines of C7-T12?

Trapezius

Which muscle inserts into the acromion, scapular spine, and lateral 1/3 of clavicle?

Trapezius

Which muscle originates from the medial clavicle, sternum, and costal cartilages 1-6?

Pectoralis major

Which muscle is innervated by the lower subscapular nerve and extends, adducts, and medially rotates the arm?

Teres major

Which muscle originates from ribs 3-5?

Pectoralis minor

Which muscle retracts, elevates, depresses, and upwardly rotates the scapula?

Trapezius

Which muscle inserts on the medial border of the scapula (below the spine)?

Rhomboid major

Which muscle is innervated by the medial and lateral pectoral nerves?

Pectoralis major