NCS Neuroanatomy and Physiology

Question 1

What are the major divisions of the nervous system?

Accepted Answer

Central nervous system (brain and spinal cord) and peripheral nervous system

Answer

The CNS processes information centrally while the PNS connects it to the rest of the body.

Question 2

What is the function of the cerebral cortex?

Accepted Answer

Higher-level functions including thought, reasoning, memory, sensation, and voluntary movement

Answer

The cerebral cortex is responsible for conscious thought and voluntary actions.

Question 3

What are the cranial nerves?

Accepted Answer

Twelve pairs of nerves emerging directly from the brain, each with specific sensory or motor functions

Answer

The 12 cranial nerve pairs control functions from smell and vision to facial expression and swallowing.

Question 4

What is the blood-brain barrier?

Accepted Answer

A selective permeability barrier protecting the brain from harmful substances in the blood

Answer

The BBB allows essential nutrients through while blocking potentially harmful substances.

Question 5

What is a dermatome?

Accepted Answer

An area of skin supplied by a single spinal nerve root

Answer

Dermatome mapping helps clinicians identify which spinal nerve root level is affected based on sensory loss patterns.

(NCS) Neurologic Clinical Specialist Practice Test