Question 1

Which of the following best describes the function of the spinal meninges?

Accepted Answer

They provide physical stability, shock absorption, and a pathway for blood vessels supplying the spinal cord.

Question 2

A patient presents with a loss of sensation in a specific region of skin on the lateral thigh. Which structure is most likely affected?

Accepted Answer

The lateral femoral cutaneous nerve

Question 3

Which of the following statements about the organization of gray and white matter in the spinal cord is correct?

Accepted Answer

Gray matter is deep and integrates information, while white matter is superficial and carries information.

Question 4

Which of the following best describes a monosynaptic reflex?

Accepted Answer

It involves a single synapse between a sensory neuron and a motor neuron, resulting in a rapid response.

Question 5

A person steps on a sharp object and immediately lifts their foot while extending the opposite leg to support their weight. Which neural circuit pattern is primarily responsible for this coordinated response?

Accepted Answer

Parallel processing

Question 6

Which of the following is a characteristic of the tendon reflex?

Accepted Answer

It prevents skeletal muscles from developing too much tension and tearing tendons.

Question 7

Which of the following best explains why the Babinski reflex is considered abnormal in adults?

Accepted Answer

It suggests damage to the central nervous system in adults.

Question 8

Which of the following is TRUE regarding the structure of a spinal nerve?

Accepted Answer

A spinal nerve is formed by the union of the anterior and posterior roots and is a mixed nerve.

Question 9

A patient with shingles presents with a painful rash along a specific dermatome. What does this indicate about the infection?

Accepted Answer

The varicella-zoster virus has attacked the spinal nerve or ganglion associated with that dermatome.

Question 10

Which of the following best describes the function of the phrenic nerve?

Accepted Answer

It controls the diaphragm, essential for breathing.

Question 11

Which of the following is a correct pairing of a nerve plexus and a major nerve that arises from it?

Accepted Answer

Brachial plexus – median nerve

Question 12

Which of the following is a function of the pia mater?

Accepted Answer

It is firmly attached to the underlying neural tissue and contains blood vessels that supply the spinal cord.

Question 13

Which of the following best describes the role of interneurons in a polysynaptic reflex?

Accepted Answer

They allow for more complex responses by integrating and distributing information to multiple muscle groups.

Question 14

Which neural circuit pattern allows both conscious and subconscious control of the diaphragm during breathing?

Accepted Answer

Convergence

Question 15

A patient receives an epidural injection for pain relief during childbirth. Into which space is the anesthetic administered?

Accepted Answer

Epidural space

Question 16

Which of the following is a characteristic of polysynaptic reflexes?

Accepted Answer

They involve pools of interneurons, reciprocal inhibition, and can activate muscles in multiple areas.

Question 17

Which of the following best describes the function of the white ramus communicans?

Accepted Answer

It contains myelinated axons that innervate glands and smooth muscle.

Question 18

Which of the following is the correct order of the steps in a neural reflex arc?

Accepted Answer

Stimulus activates a receptor → Activation of a sensory neuron → Information processing in the CNS → Activation of a motor neuron → Response by a peripheral effector

Question 19

Which of the following best explains reciprocal inhibition during a withdrawal reflex?

Accepted Answer

The stretch reflex of antagonistic muscles is inhibited, allowing the withdrawal movement.

Question 20

Which of the following is a real-life example of an acquired reflex?

Accepted Answer

Braking a car during an emergency after repeated practice

Study Guide: The Spinal Cord, Spinal Nerves, and Spinal Reflexes

Study Guide - Practice Questions

Study Guide - Flashcards