Hand

Question 1

3 parts of deep fascia of palm

Answer 1

1. lateral part - covers thenar eminence
2. medial part - covers hypothenar eminence
3. central part - palmar aponeurosis

Question 2

functions of palmar aponeurosis

Answer 2

protects tendons, vessels, and nerves which go to the fingers

Question 3

shape of palmar aponeurosis

Answer 3

triangular and has:
apex - fuses with flexor retinaculum and has insertion of palmaris longus tendon
base - 4 slips that pass to root of medial 4 fingers
lateral margin - covers thenar eminence
medial margin - covers hypothenar eminence

Question 4

fibrous septa

Answer 4

lateral palmar septum - attaches to 1st metacarpal bone and supplies thenar muscles

medial - attaches to 5th metacarpal bone

intermediate - attaches to 3rd matacarpal bone

Question 5

relations of palmar aponeurosis

Answer 5

deep surface is related to superficial palmar arch and facial spaces of the palm of the hand

Question 6

superficial palmar arch is formed by

Answer 6

superficial division of ulnar artery in palm of hand

Question 7

lateral muscles of the palm

Answer 7

muscles of thenar eminence:
abductor pollicis brevis
flexor pollicis brevis
opponens pollicis 
\+ adductor pollicis muscle

Question 8

lateral muscles of palm nerve supply - thenar muscles

Answer 8

median nerve

Question 9

lateral muscles of palm action - thenar muscles

Answer 9

abductor pollicis brevis: abducts carpo-metacarpal joint of thumb
flexor pollicis brevis: flexes carpo-metacarpal and metacarpophalangeal joints of thumb
opponens pollicis: opposes thumb against other fingers and acts only on carpo-metacarpal joint

Question 10

adductor pollicis nerve supply

Answer 10

deep branch of ulnar nerve

Question 11

adductor pollicis action

Answer 11

adducts thumb at carpo-metacarpal joint

Question 12

median muscles of the palm

Answer 12

muscles of hypothenar eminence :
abductor digiti minimi
flexor digiti minimi
oppones digiti minimi
\+ palmaris brevis

Question 13

common nerve supply of hypothenar muscles

Answer 13

deep brand of ulnar nerve

Question 14

action of hypothenar muscles

Answer 14

abductor digiti minimi: abducts metacarpo-phalangeal joint of little finger
flexor digiti minimi brevis: flexes metacarpo-phalangeal joint of little finger
oppones digiti minimi: opposes little finger against thumb

Question 15

palmaris brevis nerve supply

Answer 15

superficial branch of ulnar nerve

Question 16

palmaris brevis action

Answer 16

deepens hollow of palm

Question 17

intermediate muscles of palm

Answer 17

1. 4 lumbricals
2. 4 palmar interossei
3. 4 dorsal interossei

Question 18

lumbricals nerve supply

Answer 18

lateral 2 - median nerve

medial 2 - deep branch of ulnar nerve

Question 19

lumbricals action

Answer 19

acts with interossei, flex the metacarpo-phalangeal joints and extend interphalangeal joints of medial 4 fingers.
they are responsible for putting fingers in writing position

Question 20

palmar interossei nerve supply

Answer 20

deep branch of ulnar nerve

Question 21

palmar interossei action

Answer 21

adducts thumb, index, ring, little finger toward middle fingers

help put fingers in writing position

PAD

Question 22

dorsal interossei nerve supplly

Answer 22

deep branch of ulnar nerve

Question 23

dorsal interossei action

Answer 23

DAB

abduct index, middle and ring fingers from line of middle finger

helps put finger in writing position