MMT Nerve Innervation and Muscle Function 2

Question 1

Weakness of the tibialis anterior during MMT dorsiflexion testing most directly implicates which nerve root?

Accepted Answer

L4

Answer

L3

Answer

L5

Answer

S1

Question 2

The serratus anterior, tested by scapular protraction in MMT, is innervated by which nerve?

Accepted Answer

Long thoracic nerve

Answer

Thoracodorsal nerve

Answer

Medial pectoral nerve

Answer

Suprascapular nerve

Question 3

During MMT, weakness of elbow extension most directly implicates which nerve at which root level?

Accepted Answer

Radial nerve C7-C8

Answer

Musculocutaneous nerve C5-C6

Answer

Median nerve C6-C7

Answer

Ulnar nerve C8-T1

Question 4

The gluteus maximus, the primary muscle for hip extension MMT, is innervated by which nerve?

Accepted Answer

Inferior gluteal nerve

Answer

Superior gluteal nerve

Answer

Sciatic nerve

Answer

Pudendal nerve

Question 5

In MMT, weakness of extensor hallucis longus (great toe extension) is a classic indicator of which nerve root dysfunction?

Accepted Answer

L5

Answer

L4

Answer

S1

Answer

S2

Question 6

Which nerve root level is primarily tested when assessing shoulder abduction strength during MMT?

Accepted Answer

C5-C6

Answer

C3-C4

Answer

C6-C7

Answer

C7-C8

Question 7

Hip adduction weakness during MMT most likely indicates involvement of which nerve?

Accepted Answer

Obturator nerve

Answer

Superior gluteal nerve

Answer

Femoral nerve

Answer

Sciatic nerve