Anterior Axioappendicular Muscles

Question 0

Pectoralis Minor

Answer 0

Origin: 3-5th ribs near their costal cartilages

Insertion: Medial border and superior surface of coracoid process of scapula

Innervation: Medial pectoral nerve (C8, T1)

Question 1

Pectoralis Major

Answer 1

Origin: 1)Anterior surface of medial half of clavicle (Clavicular Head), 2)Anterior surface of sternum, 3)superior six costal cartilages, 4)Aponeurosis of external oblique muscle (Sternocostal head)

Insertion: Lateral lip of intertubercular sulcus (groove) of humerus

Innervation: Lateral and Medial Pectoral Nerves; Clavicular head (C5,C6), sternocostal head (C7, C8, T1)

Question 2

Subclavius

Answer 2

Origin: Junction of 1st rib and its costal cartilage

Insertion: Inferior surface of middle third of clavicle

Innervation: Subclavian nerve (C5, C6)

Question 3

Serratus Anterior

Answer 3

Origin: External surfaces of lateral parts of 1-8th ribs

Insertion: Anterior surface of medial border of scapula

Innervation: Long thoracic nerve (C5, C6, C7)