Extremities: Nerves & Muscles

Question 1

Biceps Brachii (action, nerve, spinal segment)

Answer 1

A: Elbow Flexion/Supination, Shoulder Flexion (long head)
N: Musculocutaneous n.
Segment: C5,C6

Question 2

Abductor Digiti Minimi (Action, Nerve, Spinal Segment)

Answer 2

A: 5th finger abduction
N: Ulnar
Segment: C8, T1

Question 3

Abductor Pollicis Brevis (Action, Nerve, Spinal Segment)

Answer 3

A: Thumb abduction, Opposition
N: Median
S: C8,T1

Question 4

Abductor Pollicis Longus (Action, Nerve, Spinal Segment)

Answer 4

A: Thumb Abduction, Wrist Radial deviation
N: Posterior Interosseus (Radial N.)
S: C7, C8

Question 5

Adductor Pollicis (Action, Nerve, Spinal Segment)

Answer 5

A: Thumb ADDuction
N: Ulnar
S: C8, T1

Question 6

Anconeus (Action, Nerve, Spinal Segment)

Answer 6

A: Elbow Extension
N: Radial
S: C7, C8 (T1)

Question 7

Brachialis (Action, Nerve, Segment)

Answer 7

A: Elbow Flexion
N: Musculocutaneous/Radial
S: C5, C6, (C7

Question 8

Brachioradialis (Action, Nerve, Spinal Segment)

Answer 8

A: Elbow flexion
N: Radial
S: C5, C6, (C7)

Question 9

Coracobrachialis (Action, Nerve, Spinal Segment)

Answer 9

A: Shoulder Flexion
N: Musculocutaneous
S: C5, C6, C7

Question 10

Deltoid (Action, Nerve, Spinal Segment)

Answer 10

A: Shoulder Abduction
N: Axillary
S: C5, C6

Question 11

Deltoid-Anterior Fibers (Action, Nerve, Spinal Segment)

Answer 11

A: Shoulder Flexion, Horizontal ADDuction, Internal Rotation
N: Axillary
S: C5, C6

Question 12

Deltoid-Posterior Fibers (Action, Nerve, Spinal Segment)

Answer 12

A: Extension, horizontal abduction, external rotation
N: Axillary
S: C5, C6

Question 13

Dorsal Interossei of Hand (Action, Nerve, Spinal Segment)

Answer 13

A: Finger flexion, Abduction
N: Ulnar
S: C8, T1

Question 14

Extensor Carpi Radialis Longus(Action, Nerve, Spinal Segment)

Answer 14

A: Wrist extension and radial deviation
N: Radial N
S: C6, C7

Question 15

Extensor Carpi Radialis Brevis (Action, Nerve, Spinal Segment)

Answer 15

A: Wrist Extension
N: Posterior Interosseus (Radial)
S: C7,C C8

Question 16

Extensor Carpi Ulnaris (Action, Nerve, Spinal Segment)

Answer 16

A: Wrist extension, ulnar deviation
N: Posterior Interosseus (Radial)
S: C7, C8

Question 17

Extensor Digiti Minimi (Action, Nerve, Spinal Segment)

Answer 17

A: 5th finger extension
N: Posterior interosseus (Radial)
S: C7,C8

Question 18

Extensor digitorum (Action, Nerve, Spinal Segment)

Answer 18

A: Finger Extension
N: Posterior Interosseus (Radial)
S: C7,C8

Question 19

Extensor Indicis (Action, Nerve, Spinal Segment)

Answer 19

A: Index finger extension
N: Posterior Interosseus (Radial)
S: C7,C8

Question 20

Extensor Pollicis Brevis (Action, Nerve, Spinal Segment)

Answer 20

A: Wrist Radial Deviation, ThumbExtension
N: Posterior Interosseus (Radial)
S: C7,C8