Question 1

Which structure anchors the spinal cord and prevents superior-inferior movement within the vertebral canal?

Accepted Answer

Filum terminale

Question 2

A patient presents with loss of sensation in a specific region of skin. Which anatomical concept best explains this phenomenon?

Accepted Answer

Dermatome

Question 3

Which of the following best describes the function of the gray matter in the spinal cord?

Accepted Answer

Processing information and housing neuron cell bodies

Question 4

During a lumbar puncture, the needle is inserted into which space to collect cerebrospinal fluid (CSF)?

Accepted Answer

Subarachnoid space

Question 5

Which of the following is TRUE regarding the organization of white matter in the spinal cord?

Accepted Answer

It is divided into posterior, lateral, and anterior columns

Question 6

A reflex that involves only one synapse between a sensory and a motor neuron is classified as:

Accepted Answer

Monosynaptic

Question 7

Which of the following best describes the pathway of sensory information entering the spinal cord?

Accepted Answer

Via the dorsal root into the posterior horn

Question 8

Which of the following is a correct pairing of spinal cord structure and its function?

Accepted Answer

Ventral root – carries only motor axons

Question 9

A patient suffers a traumatic injury resulting in loss of motor function but preserved sensation in a limb. Which spinal structure is most likely damaged?

Accepted Answer

Ventral root

Question 10

Which of the following best describes the difference between the cauda equina and the conus medullaris?

Accepted Answer

The conus medullaris is the tapered end of the spinal cord, while the cauda equina is a bundle of dorsal and ventral roots

Question 11

Which connective tissue layer directly surrounds each individual axon within a peripheral nerve?

Accepted Answer

Endoneurium

Question 12

A patient is unable to sweat and experiences orthostatic hypotension after a spinal cord injury. Which type of nerve fibers are most likely affected?

Accepted Answer

Autonomic (visceral) fibers

Question 13

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

Accepted Answer

It can involve reciprocal inhibition of antagonistic muscles

Question 14

Which of the following best describes the function of the anterior white commissure?

Accepted Answer

It contains myelinated axons crossing sides

Question 15

Which of the following is TRUE regarding the stretch reflex?

Accepted Answer

It helps regulate skeletal muscle length and prevents overstretching

Question 16

Which of the following best describes the difference between a nerve plexus and a dermatome?

Accepted Answer

A nerve plexus is a network of intersecting nerves, while a dermatome is a region of skin monitored by a single pair of spinal nerves

Question 17

Which of the following is the correct order of the spinal meninges from outermost to innermost?

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 18

Which of the following best describes the function of the dorsal root ganglion?

Accepted Answer

It contains cell bodies of sensory neurons

Question 19

A patient touches a hot stove and immediately withdraws their hand. Which type of reflex is primarily responsible for this action?

Accepted Answer

Flexor (withdrawal) reflex

Question 20

Which of the following best describes the role of the central canal in the spinal cord?

Accepted Answer

It serves as a passageway for cerebrospinal fluid (CSF)

Spinal Cord Anatomy and Reflexes: Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards