lecture 1 anatomy- pectoral region

Question 1

dermatome at the neck and shoulder

Answer 1

C4

Question 1

dermatome at lateral side of the upper limb

Answer 1

c5 c6 c7

Question 2

dermatome at medial side of upper limb

Answer 2

c8 t1

Question 3

origin of pectoralis major

Answer 3

clavicle, sternum, upper 6 coastal cartilages, oblique line of aponeurosis

Question 4

insertion of pectoralis major

Answer 4

lateral lip of bicipetal groove of humerus

Question 5

nerve supply of pectoralis minor and major

Answer 5

lateral and medial pectoral nerve C5c6 c7c8t1

Question 6

action of pectoralis major

Answer 6

flexion by clavicular fibers
adduction by sternal fibers
and medial rotation of shoulder joint

Question 6

clavicular head fibers supplied by

Answer 6

c5c6

Question 7

sternal head fibers of pectoralis major

Answer 7

c7c8t1

Question 8

origin of pectoralis minor

Answer 8

2nd3rd4th or 3rd4th5th ribs

Question 9

insertion of pectoralis minor

Answer 9

medial and upper border of coracoid process of scapula

Question 10

action of pectoralis minor

Answer 10

raises the ribs
pushes scapula downward and forward

Question 11

the deep fascia between subclavius and pectoralis minor

Answer 11

costocoracoid membrane

Question 12

the deep fascia covering the pectoralis minor inferiorly

Answer 12

suspensory ligament of axilla

Question 13

which structures peirces the costocoracoid membrane

Answer 13

cephalic vein
thoracoacrominal artery
lateral pectoral nerve

Question 14

which nerve peirces both pectoralis minor and major
and which peirces only the major muscle

Answer 14

medial pectoral nerve
lateral pectoral nerve