MMT Nerve Innervation and Muscle Function

Question 1

Which nerve innervates the deltoid muscle, making it the primary nerve tested during shoulder abduction MMT?

Accepted Answer

Axillary nerve

Answer

Musculocutaneous nerve

Answer

Radial nerve

Answer

Suprascapular nerve

Question 2

The biceps brachii, tested during elbow flexion MMT, is primarily innervated by which nerve?

Accepted Answer

Musculocutaneous nerve

Answer

Radial nerve

Answer

Median nerve

Answer

Ulnar nerve

Question 3

In MMT, weakness of the wrist extensors most directly implicates which peripheral nerve?

Accepted Answer

Radial nerve

Answer

Median nerve

Answer

Ulnar nerve

Answer

Axillary nerve

Question 4

Which nerve innervates the gluteus medius, the primary muscle tested during hip abduction MMT?

Accepted Answer

Superior gluteal nerve

Answer

Inferior gluteal nerve

Answer

Sciatic nerve

Answer

Obturator nerve

Question 5

Ankle plantarflexion weakness during MMT most directly implicates which nerve root level?

Accepted Answer

S1

Answer

L4

Answer

L5

Answer

S3

Question 6

The intrinsic hand muscles including all interossei are primarily innervated by which nerve, tested in fine hand function MMT?

Accepted Answer

Ulnar nerve

Answer

Median nerve

Answer

Radial nerve

Answer

Musculocutaneous nerve

Question 7

Which spinal nerve root level is the primary target when MMT assesses knee extension strength?

Accepted Answer

L4

Answer

L2

Answer

L3

Answer

L5