five nerves of brachial plexus

Question 1

Axillary

Answer 1

C5-C6 - deltoid, Teres minor
- sensory - lateral arm over portion of deltoid
-impairment- Loss of shoulder abduction. Weak shoulder lateral rotation

Question 2

Musculocutaneous

Answer 2

C5-C7 - Coracobrachialis,
biceps brachii
brachialis

sensory:
anterior lateral forearm

“impairment - loss of elbow flexion, weak supination

Question 3

Radial

Answer 3

C5-t1
Muscles:
triceps brachii
anconeus
supinator
wrist, finger, thumb extensors and abductors

Sensory: posterior arm and forearm
radial side posterior hand.

Impairment: Loss of elbow wrist thumb, finger extension
weak supination

Question 4

Median

Answer 4

C6-t1
Muscles:
Pronators,
wrist and finger flexors on radial side
most thumb muscles
first and second lumbricals\

Sensory:
Palmar aspect thumb, second to fourth fingers.

Impairment: Loss of forearm pronation, loss of thumb opposition, flexion and abduction. Weak wrist flexion radial side. Weak second and third finger flexion.

Question 5

Ulnar

Answer 5

C8, T1
Muscles:
Flexor carpi ulnaris
Flexor digitorum profundis - medial half.
Interossei
Third and fourth lumbricals
Fifth finger muscles

Sensory: medial portion of fourth and fifth finger

impairment:

loss of ulnar deviation
Weak wrist and finger flexion
loss of thumb adduction
loss of most intrinsic muscles.