Muscles of the hand

Question 1

2 sections

Answer 1

Thenar eminence
Hypothenar eminence

(flexor, abductor, oppenens on each)

Question 2

Thenar muscles

Answer 2

Flexor pollucis brevis
Abductor pollucis brevis
Oppenens pollicis (deep)

Question 3

Thenar nerve supply

Answer 3

Median nerve

Question 4

Hypothenar muscles

Answer 4

Flexor digiti minimi brevis
Abductor digiti minimi
Oppenens digiti minimi

Question 5

Interossei muscles

Answer 5

Palmar interossei

Dorsal interossei

Question 6

Interossei rule

Answer 6

PADS - palmars adduct
DABS - dorsal abduct

(4 on the door, 3 on the palm)

(away from middle finger)

Question 7

Other hand muscle

Answer 7

Adductor pollucis (sits across) 
Ulnar nerve

Question 8

Hypothenar nerve supply

Answer 8

Ulnar nerve

Question 9

Lumbricles function

Answer 9

Flex fingers at metacarphalangeal joint
extend at interphalangeal joint

(claw hand)

Question 10

lumbricles O and I

Answer 10

O: flexor digitorum profundus tendons
I: extensor expansion

Question 11

Lumbricles structure

Answer 11

index and middle: unipennate

ring and litte: bipennate

Question 12

Nerve supply lumbricles

Answer 12

index and middle (1 and 2) - median nerve

ring and little (3 and 4) - ulnar nerve

Question 13

Insertions dorsal interossei

Answer 13

Abducts soo…
1st and 2nd (near thumb) insert onto radial side proximal phalynx and extensor expansion
3rd and 4th insert onto ulnar side

Question 14

insertions palmar interossei

Answer 14

Adducts so..
1st ulnar side
2nd 3rd - radial side

Question 15

Structor of extensor digitorum

Answer 15

Each tendon splits to a central slip (inserts onto base of middle phalanx)
2 lateral slips - insert onto base to distal phalanx

Question 16

Artery supply to hand

Answer 16

Radial and ulnar artery via deep and superficial palmar arches

Question 17

What does superficial palmar arch do?

Answer 17

common palmar arteries - supply fingers

contributed to most by the ulnar artery

Question 18

Deep palmar arch

Answer 18

From radial artery mostly

Blood supply to thumb and radial side of index finger

Question 19

Major nerve supply intrinsic hand muscles

Answer 19

Mostly ulnar apart from LOAF

LOAF is median nerve

Lumbricles - radial side
Opponens pollucis
Abductor pollicis brevis
Flexor pollicis brevis

Question 20

Testing nerve sensation

Answer 20

Radial: dorsum first webspace
Median: palmar tip of index
Ulnar: ulnar border hand

Question 21

Snuff box contents

Answer 21

Radial artery
superficial radial nerve
cephalic vein

Question 22

Sensory nerve hand

Answer 22

Radial is a lot of dorsum (apart from medial 1 1/2 fingers)
Median is palm until medial 1 1/2 fingers
Ulnar nerve - medial 1/2 fingers all surface

Question 23

whats eye of the hand

Answer 23

median nerve - feel what something is when you cannot see it