hand

Question 1

thumb dermatome

Answer 1

C6

Question 2

middle finger dermatome

Answer 2

C7

Question 3

pinky finger dermatome

Answer 3

C8

Question 4

define “extensor expansion”

Answer 4

white connective tissue stretching over dorsal side of fingers (which is where tendons can insert)

Question 5

IP joints are what joint type and in what location?

Answer 5

hinge joints

Question 6

MP joints are what joint type and in what location?

Answer 6

hinge joints

Question 7

CM joints are what joint type and in what location?
(different joints for different digits)

Answer 7

D1 = saddle joint
D2, 3, 4, 5 = plane joints

Question 8

intercarpal joints are in what location? what do they allow?

Answer 8

in the distal carpals

movement as one unit

Question 9

space between ulna and carpals at distal end of forearm is filled by what?

Answer 9

triangular fibrocartilage

Question 10

carpals only articulate with which forearm bone?

Answer 10

radius

Question 11

superficial palmar arch is formed from what 2 arteries?

Answer 11

ulnar artery
radial artery

Question 12

deep palmar arch is formed from what 2 artery branches?

Answer 12

deep ulnar artery
deep radial artery

Question 13

radial nerve innervates what part of the forearm?

Answer 13

posterior

Question 14

median nerve innervates what part of the forearm?

Answer 14

lateral

Question 15

ulnar nerve innervates what part of the forearm?

Answer 15

medial

Question 16

define the “palmar aponeurosis”

Answer 16

flat connective tissue structure just beneath the skin on the palm

assists w grip strength

Question 17

medial border of anatomical snuffbox (R side on R hand)

Answer 17

tendon of extensor pollicis longus m.

Question 18

what 1 artery and 1 nerve pass through the anatomical snuffbox?

Answer 18

radial artery
superficial radial nerve

Question 19

lateral border of anatomical snuffbox (L side on R hand)
[made up of 2 structures]

Answer 19

tendon of extensor pollicis brevis m.

tendon of abductor pollicis longus m. (is not visible but is palpable)

Question 20

3 muscles in thenar group:

Answer 20

abductor pollicis brevis m.
flexor pollicis brevis m.
opponens pollicis m.

Question 21

3 muscles in hypothenar group:

Answer 21

abductor digiti minimi m.
flexor digiti minimi brevis m.
opponens digiti minimi m.

Question 22

muscles in central compartment of hand:

Answer 22

lumbrical muscles

Question 23

muscles in interosseous compartment of hand:

Answer 23

dorsal interosseous muscles
palmar interosseous muscles

Question 24

1 muscle in adductor compartment of hand:

Answer 24

adductor pollicis m.