Pectoral Region

Question 1

attachments of the PECTORALIS MAJOR

Answer 1

from clavicle, costal cartilage, sternum & aponeurosis of external oblique to the lateral lip of the intertubercular sulcus of the humerus

Question 2

actions of the PECTORALIS MAJOR

Answer 2

humeral adduction, flexion & medial rotation (sternocostal head assists with extension of flexed arm)

Question 3

innervations of PECTORALIS MAJOR

Answer 3

medial & lateral pectoral nerves

Question 4

attachments of the PECTORALIS MINOR

Answer 4

from outer surfaces of ribs 3-5 to the coracoid process

Question 5

actions of the PECTORALIS MINOR

Answer 5

anterior tilt of scapula; assists with depression of the shoulder & forces inspiration

Question 6

innervations of PECTORALIS MINOR

Answer 6

medial & lateral pectoral nerves

Question 7

attachments of the SERRATUS ANTERIOR

Answer 7

from the outer surfaces & superior borders of upper 8-10 ribs to the costal surface of the medial border of the scapula

Question 8

actions of the SERRATUS ANTERIOR

Answer 8

scapular protraction & upward rotation

Question 9

innervation of SERRATUS ANTERIOR

Answer 9

long thoracic nerve

Question 10

attachments of the SUBCLAVIUS

Answer 10

from 1st rib & cartilage to the undersurface of the clavicle

Question 11

innervation of SUBCLAVIUS

Answer 11

subclavian nerve