4th Year Anatomy Key Points

Question 1

what innervates the anterior thigh?

Answer 1

femoral nerve (L2,3,4)

Question 2

what innervates the inner thigh?

Answer 2

obturator nerve L2,3,4 (adductors)

Question 3

what innervates the posterior thigh?

Answer 3

sciatic nerve (L5, S1, S2)

Question 4

what innervates the anterior leg?

Answer 4

deep fibular nerve (L4,5)

Question 5

what innervates the lateral leg?

Answer 5

superficial fibular nerve L5, S1, S2

Question 6

what innervates the posterior leg?

Answer 6

tibial nerve

Question 7

what nerve roots is the ankle jerk?

Answer 7

S1, 2

Question 8

what nerve roots is the knee jerk?

Answer 8

L3, 4

Question 9

what innervates trapezius?

Answer 9

CNXI (spinal accessory nerve)

Question 10

what innervates latissimus dorsi?

Answer 10

thoracodorsal nerve

Question 11

what innervates rhomboid major and minor?

Answer 11

dorsal scapular nerve

Question 12

what innervates pectoralis major and minor?

Answer 12

medial pectoral nerve

Question 13

what innervates serratus anterior?

Answer 13

long thoracic nerve

Question 14

what innervates the anterior arm?

Answer 14

musculocutaneous nerve

Question 15

role of the anterior arm?

Answer 15

flexion and supination

Question 16

what innervates posterior arm?

Answer 16

radial nerve

Question 17

what innervates the anterior forearm?

Answer 17

median nerve (except flexor carpi ulnaris - ulnar)

Question 18

role of anterior forearm

Answer 18

flexion

pronation

Question 19

what innervates posteiror forarm?

Answer 19

radial nerve

Question 20

role of posterior forearm?

Answer 20

extension

supination

Question 21

what muscles are in the thenar eminence

Answer 21

abductor pollicis brevis
flexor pollicis
opponens pollicis

Question 22

what does the median nerve innervate in the hand?

Answer 22

LOAF (lateral 2 lumbricals)

Question 23

what is involved in the hypothenar eminence?

Answer 23

abductor digiti minimi
flexor digiti minimi brevis
opponens digiti minimi

Question 24

what does the ulnar nerve innervates in the hand?

Answer 24

lumbricals 3,4 (medial 2)
interossei (DAB and PAD)
hypothenar

Question 25

what forms the carpal tunnel?

Answer 25

flexor retinaculum | carpals

Question 26

what does the carpal tunnel contain?

Answer 26

flexor digitorum superficialis x4 flexor digitorum profundus x 4 flexor pollicis longus median nerve

Question 27

which fracture risks damage to axillary nerve?

Answer 27

surgical neck of humerus | anterior shoulder disolocation

Question 28

what does the axillary nerve supply?

Answer 28

deltoid and teres minor

Question 29

borders of quadrangular space?

Answer 29

``` SUPERIOR= teres minor INFERIOR= teres major MEDIAL= triceps LATERAL= humerus ```

Question 30

hand deformity for median nerve?

Answer 30

ape hand

Question 31

hand deformity for median nerve - anterior interosseous nereve?

Answer 31

abnormal OK sign

Question 32

hand deformity for ulnar nerve

Answer 32

claw hand

Question 33

hand deformity for radial nerve

Answer 33

wrist drop

Question 34

what must be asked of all patients in MSK?

Answer 34

which hand is dominant

Question 35

nerve roots of biceps jerk

Answer 35

C5, 6

Question 36

nerve roots of tricep reflex

Answer 36

C6, 7

Question 37

nerve roots of forearm reflex

Answer 37

C5, 6

Question 38

innervation of supraspinatus and infraspinatus

Answer 38

suprascapular nerve

Question 39

innervation of teres minor

Answer 39

axillary nerve

Question 40

innervation of subscapularis

Answer 40

subscapular nerve