anterior axio-appendicular muscles

Question 0

pectoralis major insertion

Answer 0

lateral lip of intertubercular sulcas of humerus

Question 1

pectoralis major origin

Answer 1

clavicular head: anterior surface of medial half of clavicle

sternocostal head: anterior surface of sternum, superior six costal cartilages, aponeurosis of external oblique muscle

Question 2

pectoralis major innervation

Answer 2

lateral and medial pectoral nerves
clavicular head - C5, C6
sternalcostal head - C7, C8, T1

Question 3

pectoralis major action

Answer 3

adducts and medially rotates shoulder joint, draws scapula anteriorly and inferiorly
clavicular head- flexes shoulder joint
sternocostal head -extends it from flexed position

Question 4

pectoralis minor origin

Answer 4

3rd - 5th ribs near their costal cartilages

Question 5

pectoralis minor insertion

Answer 5

medial border and superior surface of coracoid process of scapula

Question 6

pectoralis minor innervation

Answer 6

medial pectoral nerve C8, T1

Question 7

pectoralis action

Answer 7

stabilizes scapula by drawing inferiorly and anteriorly to hold it against thoracic wall

Question 8

subclavius origin

Answer 8

junction of the 1st rib and it’s costal cartilage

Question 9

subclavious insertion

Answer 9

inferior surface of middle third of clavicle

Question 10

subclavius innervation

Answer 10

subclavian nerve (c5 and C6)

Question 11

subclavian action

Answer 11

anchors and depresses clavicle

Question 12

serratus anterior origin

Answer 12

external surface of lateral parts of 1st through 8th ribs

Question 13

serratus anterior insertion

Answer 13

anterior surface of medial border of scapula

Question 14

serratus anterior action

Answer 14

protracts scapula and holds against thoracic wall

rotates scapula