IONM Midterm Exam Questions and Answers Graded A+

IONM Midterm Exam Questions and
Answers Graded A+

What spinal nerve root innervates the sternocleidomastoid? - Correct answer-C2

(Spinal Accessory Nerve)

What spinal nerve root innervates the Trapezius? - Correct answer-C3, C4 (Spinal

Accessory nerve)

What spinal nerve root innervates the deltoid and biceps? - Correct answer-C5, C6

What spinal nerve root innervates the triceps? - Correct answer-C7, C8

What spinal nerve root innervates the extensor carpi radialis? - Correct answer-C6,

C7

What spinal nerve root innervates the flexor carpi ulnaris? - Correct answer-C8

What spinal nerve root innervates the first dorsal interosseous and the abductor

digiti minimi? - Correct answer-C8, T1

What spinal nerve root innervates the intercostals? - Correct answer-T1 - T11

What spinal nerve root innervates the rectus abdominus? - Correct answer-T5- T12


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,What spinal nerve root innervates the iliopsoas and the sartorius? - Correct answer-

L2, L3

What spinal nerve root innervates the adductor longus? - Correct answer-L2, L3,

L4

What spinal nerve root innervates the quadriceps (rectus femoris)? - Correct

answer-L3, L4

What spinal nerve root innervates the tibialis anteroir? - Correct answer-L4, L5

What spinal nerve root innervates the biceps femoris and the gastrocnemious? -

Correct answer-S1, S2

What spinal nerve root innervates the extensor hallucis longus? - Correct answer-

L5, S1

What spinal nerve root innervates the abductor hallucis? - Correct answer-S1-S2

What spinal nerve root innervates the external anal sphincter? - Correct answer-S3,

S4

What muscle corresponds to cranial nerve III (oculomotor)? - Correct answer-

Inferior rectus

What muscle corresponds to cranial nerve IV (trochlear)? - Correct answer-

Superior oblique
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,What muscle corresponds to cranial nerve V (trigeminal)? - Correct answer-

Temporalis, masseter

What muscle corresponds to cranial nerve VI (abducens)? - Correct answer-Lateral

rectus

What muscle corresponds to cranial nerve VII (facial)? - Correct answer-

Orbicularis Oculi, Orbicularis oris, mentalis

What muscle corresponds to cranial nerve IX (glossopharyngeal)? - Correct

answer-Stylopharyngeus (soft palate)

What muscle corresponds to cranial nerve X (vagus)? - Correct answer-

Thryoarytenoid

What muscle corresponds to cranial nerve XI (accessory)? - Correct answer-

Trapezius

What muscle corresponds to cranial nerve XII (Hypoglossal)? - Correct answer-

Tongue

Corticospinal tract - Correct answer-o The pathway originating in the motor cortex

and terminating in the lower motor neurons or interneurons in the spinal cord

o Controls movement of the trunk and extremities



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, Corticobulbar tract - Correct answer-o The pathway originating in the motor cortex

and terminating at motor cranial nuclei in brainstem that control the head, neck and

face movement

Somatosensory tract - Correct answer-· relay information from proprioceptors

(position and self-movement), mechanoreceptors (touch, pressure, stretch),

nociceptors (pain) and thermoreceptors (temperature) to the contralateral sensory

cortex.

Where is the end of the spinal cord located and what is it called? - Correct answer-

conus medullaris. Located between T 12 and L1

Spinal cord blood supply - Correct answer-· The anterior spinal artery (bilateral

perfusion), left posterior spinal artery and right posterior spinal artery along with

corresponding segmental arteries are primarily responsible for spinal cord

perfusion.

How many spinal vertebrae are there? - Correct answer-o 7 cervical vertebrae

o 12 thoracic

o 5 lumbar

o 5 sacral (fused)

How many spinal nerves are there? - Correct answer-31 pairs

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