DHUBS - Week 4 - Upper Limb (Elbow, Arm, Wrist, Finger and Thumb.

Question 1

What muscles act on the Elbow for Flexion (Supinated)?

Answer 1

Biceps Brachii and Brachialis

Question 2

What muscles act on the Elbow for Flexion (Neutral)?

Answer 2

Brachioradialis

Question 3

What muscles act on the Elbow for extension?

Answer 3

Triceps

Question 4

What muscles act on the Forearm for Pronation and Supination?

Answer 4

Pronation:
- Pronator Teres (C6-7)
- Pronator Qaudratus (C8,T1)

Supination:
- Supinator
- Biceps Brachii

Question 5

What muscles act on the Wrist for Extension and Flexion?

Answer 5

Extension: Wrist extensors

Flexion: Wrist flexors

Question 6

What muscles act on the finger for Extension and Flexion?

Answer 6

Extension: Finger extensors

Flexion:
- Flexor digitorum superficialis
- Flexor digitorum profundus

Question 7

What muscles act on the finger for Abduction and Adduction?

Answer 7

Abduction: Dorsal interossei (DAB)

Adduction: Palmar interossei (PAD)

Question 8

What muscles act on the thumb for extension?

Answer 8

Extensor pollicis longus & brevis

Question 9

What muscles act on the thumb for Adduction and Abduction?

Answer 9

Adduction: Adductor pollicis

Abduction: Abductor pollicis brevis

Question 10

What muscles act on the thumb for interphalangeal flexion?

Answer 10

Flexor pollicis longus

Question 11

What muscles act on the thumb for opposition?

Answer 11

Opponens pollicis

Question 12

What muscles act on the little finger for opposition?

Answer 12

Opponens digiti minimi