MUSCLES MOVING THE DIGITS (HAND)

Question 1

Flexor digitorum superficialis

Answer 1

Finger flexor (digits 2,3,4,5)

Question 2

Flexor pollicis longus

Answer 2

Thumb (pollex) flexor

Question 3

Flexor digitorum profundus (deeper)

Answer 3

Finger flexor (digits 2,3,4,5)

Question 4

How many tendons does the finger have for flexion?

Answer 4

2 tendons

Question 5

How many muscles tendons are in carpal tunnel?

Answer 5

9 flexor muscle tendons and medial nerve travelling through carpal tunnel

Question 6

What is carpal tunnel syndrome?

Answer 6

Repetitive motion of flexor tendons can irritate their sheath covering, leading to swelling and compression of median nerve in carpal tunnel

Question 7

Extensor digitorum and extensor digiti minimi

Answer 7

Finger extensors (digits 2,3,4,5)

Question 8

Extensors and abductor for thumb (pollicis)

Answer 8

Thumb extensor and abductor

Question 9

What does having a central axis in your hand mean?

Answer 9

Central axis means no palmar interossei

Question 10

3 palmar interossei

Answer 10

Finger adductors (digits 2,4,5)

Question 11

4 lumbricals

Answer 11

Finger extensors (digits 2,3,4,5)

Question 12

Adductor pollicis

Answer 12

Thumb adductor

Question 13

Flexor pollicis brevis
Opponens pollicis
Abductor pollicis brevis

Answer 13

Thenar muscles (important role for opposition of thumb)

Question 14

4 dorsal interossei

Answer 14

Finger abductors (digits 2,3,4)
Middle finger gets 2 dorsal interossei; little finger has its own abductor muscle

Question 15

Power Grip

Answer 15

Active contraction of digital flexors muscles found in the forearm (flexor digitorum profundus)

Question 16

Precision Grip

Answer 16

Active contraction of some short muscles found in the hand (thenar muscles - fine grip)