W10 - Intermediate Muscles Of The Wrist

Question 1

Name the 3 muscles of the intermediate muscles of the hand

Answer 1

Lumbricals
Palmar interossei
Dorsal interossei

Question 2

Name the proximal and distal attachments of the lumbrical muscles of the hand

Answer 2

Proximal
Tendons of the flexor digitorum profundus muscle

Distal
Extensor hoods of index, ring, middle and little finger

Question 3

What nerve supplies the lumbricals

Answer 3

Ulnar nerve for the little and ring finger
Median nerve for the middle and index

Question 4

What action does the lumbricals do

Answer 4

Flex the MCP joint while extending the IP joint

Question 5

Name the proximal and distal attachment sites for the palmer interossei muscle of the hand

Answer 5

Proximal
Sides of the metacarpals

Distal
Extensor hoods of the thumb , index, middle and ring finger
Proximal phalanx of the thumb

Question 6

What nerve supplies the palmar interossei muscle

Answer 6

Ulnar nerve C8 - T1 Adductor

Question 7

What action does the palmar interossei muscle of the hand do

Answer 7

Adduction at the MCP

Question 8

What’s the proximal and distal attachment sites for the dorsal interossei muscle of the hand

Answer 8

Proximal
Adjacent side of metacarpals

Distal
Extensor hoods and proximal phalanx of index, middle and ring finger

Question 9

What nerve supplies the dorsal interossei muscle?

Answer 9

Ulnar nerve C8 - T1 Adductor

Question 10

What action does the dorsal interossei muscle do?

Answer 10

Abduction at the MCP joint