19. Brachial Plexus Lesions

Question 1

Damage to _ nerve results in:
weakened adduction, flexion, loss of flexion at elbow when supinated, weakened supination, and diminished cutaneous sensation at forearm

Answer 1

musculocutaneous

Question 2

Damage to axillary nerve results in _

Answer 2

weakened ability to abduct, laterally rotate arm (minor and deltoid), weakened medial rotation, weakened extension and flexion at shoulder

Question 3

Damage to the _ nerve from an axilla injury results in loss of extension at elbow and weakened extension at shoulder

Answer 3

radial

Question 4

Radial nerve damage at the elbow joint results in _

Answer 4

weakened supination, loss of extension of hand and digits

Question 5

Damage to the _ nerve at the elbow or above results in loss of pronation and weakened flexion at wrist

Answer 5

median

Question 6

Injury at the wrist involves the _nerve resulting in carpal tunnel syndrome

Answer 6

median

Question 7

T/F Ulnar nerve damage results in loss of sensation upstream of injury

Answer 7

False (downstream)

Question 8

The _ and _ nerves do not effect the shoulder or arm regions

Answer 8

ulnar and median

Question 9

Upper trunk injuries result from the separation of head and shoulder during birth or injury and affects 3 major nerves _

Answer 9

musculocutaneous
axillary
suprascapular

Question 10

Lower trunk injuries result from arm being pulled upward and affects mainly the _ nerve

Answer 10

ulnar

Question 11

Winged scapula results in injury to _ nerve

Answer 11

long thoracic nerve supplied to the serratus anterior