Hand

Question 1

movements possible at the digits

Answer 1

flexion/extension at MP/IP joints

Abduction and Adduction

Question 2

movements possible at the thumb

Answer 2

flexion/extension
adduction/abduction
opposition

Question 3

synovial sheaths cover the tendons of

Answer 3

flexor digitorum superficialis m

flexor digitorum profundus m

Question 4

5th distal synovial sheath is continuous with

Answer 4

ulnar bursa

Question 5

the anatomical snuffbox contains the

Answer 5

radial a as it enters the palm of the hand to become deep palmar arch

Question 6

the superficial palmar arch originates form the

Answer 6

ulnar a

Question 7

the deep palmar arch originates form the

Answer 7

radial a .

Question 8

the princeps pollicis a to the thumb and the radialis indicies to the index finger both originate from

Answer 8

the deep palmar arch, a branch of the radial a

Question 9

lumbricals insert onto

Answer 9

the extensor hood

Question 10

lumbricals can assist in two motions of the digits

Answer 10

weak flexion and extension (because they insert onto the extensor hood)

Question 11

the superficial innervation of the ulnar n includes these two digits

Answer 11

fourth and fifth digits up to the wrist (palmar and dorsal)

Question 12

the cutaneous innervation of the radial n covers

Answer 12

the dorsal surface of the hand from wrist up to the distal phalange on 1st-3rd digits

Question 13

fascia of wrist and hand

Answer 13

palmar aponeurosis

transverse carpal ligament

Question 14

Dupuytren’s contracture

Answer 14

thickening of fibrous tissue underneath the skin of the palm
painless - associated with alcohol, diabetes, aging
see wrinkles at creases and when fingers are flexed
can reach point of restricting opening of hand

Question 15

superficial muscles of the palm

Answer 15

abductor digiti minimi 
flexor digiti minimi brevis 
lumbricals 
adductor pollicis 
flexor pollicis brevis
abductor pollicis brevis
opponens pollicis

Question 16

deep muscles of the hand (dorsal side)

Answer 16

opponens pollicis
adductor pollicis
opponens digiti minimi

Question 17

midline of hand is which digit

Answer 17

3rd digit

Question 18

palmar interosseous muscles perform what actions on which digits

Answer 18

PAD - adduction
2nd
4th
5th

Question 19

dorsal interosseous muscles perform what actions on which digits

Answer 19

DAB - abduction
2nd digit - 1st and 2nd DAB
4th
5th

Question 20

thenar group muscles

Answer 20

abductor pollicis brevis
opponens pollicis m
flexor pollicis brevis m
adductor pollicis m

Question 21

origin/insertion of abductor pollicis brevis m

Answer 21

transverse carpal ligament, scaphoid, trapezium to radial base of proximal phalanx of thumb

Question 22

action of abductor pollicis brevis

Answer 22

abduction of thumb (assists in opposition and extension

Question 23

innervation of abductor pollicis brevis

Answer 23

recurrent branch of the median n

Question 24

origin/insertion of opponens pollicis m

Answer 24

traperzium and transverse carpal ligament to metacarpal bone of thumb

Question 25

action of opponens pollicis m

Answer 25

flexion of thumb metacarpal -- opposition

Question 26

innervation of opponens pollicis m

Answer 26

recurrent branch of median n

Question 27

origin/insertion of flexor pollicis brevis m

Answer 27

trapezium, flexor retinaculum to proximal phalanx of thumb

Question 28

action of flexor pollicis brevis m

Answer 28

flexes thumb at first MCP joint

Question 29

innervation of flexor pollicis brevis m

Answer 29

superficial head: recurrent branch of median n | deep head: deep branch of ulnar n

Question 30

flexor pollicis brevis m two heads and innervation

Answer 30

superficial head is innervated by recurrent branch of median n deep head is innervate by the deep branch of ulnar n

Question 31

origin/insertion of adductor pollicis m

Answer 31

transverse head: third metacarpal oblique head: bases of 2 and 3 metacarpal and adjacent trapezoid and capitate bones to proximal phalanx of thumb and ulnar sesamoid

Question 32

actions of adductor pollicis m

Answer 32

adducts thumb at carpometacarpal joint

Question 33

innervation of adductor pollicis m

Answer 33

deep branch of ulnar n

Question 34

muscles within the hypothenar group and their innervation

Answer 34

abductor digiti minimi flexor digiti minimi brevis m opponens digiti minimi m All innervated by ulnar n

Question 35

origin/insertion of abductor digiti minimi m

Answer 35

pisiform to proximal phalanx of 5th digit

Question 36

action of abductor digiti minimi

Answer 36

abducts 5th digit, assists in flexion

Question 37

innervation of abductor digiti minimi

Answer 37

ulnar n

Question 38

origin/insertion of flexor digiti minimi brevis m

Answer 38

hamulus (hook of hamate) and flexor retinaculum to proximal phalanx of 5th digit

Question 39

action of flexor digiti minimi brevis m

Answer 39

flexes proximal phalanx of 5th digit

Question 40

innervation of flexor digiti minimi brevis

Answer 40

ulnar n

Question 41

origin/insertion of opponens digiti minimi m

Answer 41

hamulus (hook of hamate) and flexor retinaculum to medial 5th metacarpal

Question 42

actions of opponens digiti minimi m

Answer 42

brings opposition to thumb

Question 43

innervation of opponens digiti minimi m

Answer 43

ulnar n

Question 44

deep intrinsic muscles of the hand

Answer 44

lumbrical m (4) PAD DAB

Question 45

radial a gives rise to which arches

Answer 45

deep palmar arch (princeps pollicis a, radialis indicis a) superficial palmar arch of radial a

Question 46

ulnar a gives rise to which arch

Answer 46

superficial palmar arch | --> common palmar digital a --> proper palmar digitial a

Question 47

what two arteries make up the dorsal carpal arch

Answer 47

radial a and anterior interosseous a (from ulnar)

Question 48

median n innervates the muscles of the thenar group except

Answer 48

adductor pollicis m | deep head of flexor pollicis brevis m

Question 49

Lumbricals 1,2 innervated by what n

Answer 49

median n

Question 50

the hypothenar group is innervated by which n

Answer 50

ulnar n

Question 51

the intrinsic hand muscles are innervated by

Answer 51

the deep branch of the ulnar n

Question 52

T/F the only innervation on dorsum of the hand is sensory

Answer 52

t