OCC OCC Neurological Assessment & Neuromuscular Medicine 1

Question 1

Which cranial nerve carries the afferent limb of the corneal reflex?

Accepted Answer

CN V ophthalmic branch (V1)

Answer

The ophthalmic branch (V1) of the trigeminal nerve (CN V) carries sensory input from the cornea, forming the afferent limb of the corneal reflex.

Question 2

A patient presents with muscle weakness, hyporeflexia, and fasciculations. These findings are most consistent with:

Accepted Answer

Lower motor neuron lesion

Answer

Lower motor neuron lesions classically produce weakness, hyporeflexia or areflexia, muscle atrophy, and fasciculations due to denervation.

Question 3

In osteopathic medicine, somatic dysfunction at the OA-AA complex (C0-C2) can most directly compromise which cranial nerve function via the jugular foramen?

Accepted Answer

CN X (vagus)

Answer

The vagus nerve (CN X) exits the skull through the jugular foramen, which can be mechanically influenced by somatic dysfunction at the upper cervical region.

Question 4

Which dermatome covers the lateral forearm, thumb, and index finger?

Accepted Answer

C6

Answer

The C6 dermatome supplies the lateral forearm, thumb, and index finger, and is commonly tested in carpal tunnel syndrome evaluation.

Question 5

On MRI, multiple sclerosis most characteristically shows lesions in which location?

Accepted Answer

Periventricular white matter plaques

Answer

MS causes demyelinating plaques predominantly in periventricular white matter, the corpus callosum, and cerebellum, best seen on T2/FLAIR MRI sequences.

OCC - Osteopathic Continuous Certification Practice Test

OCC - Osteopathic Continuous Certification Practice Test

OCC OCC Neurological Assessment & Neuromuscular Medicine 1