Question 1

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

Accepted Answer

It serves as a highway for nerve impulse conduction to and from the brain.

Question 2

A patient presents with loss of sensation and motor control below the level of a spinal cord injury. Which of the following best explains this phenomenon?

Accepted Answer

The injury has resulted in spinal cord transection, severing all ascending and descending tracts.

Question 3

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

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 4

A lumbar puncture (spinal tap) is performed to collect cerebrospinal fluid. From which space is the fluid withdrawn?

Accepted Answer

Subarachnoid space

Question 5

Which spinal tract is primarily responsible for transmitting pain and temperature sensations to the brain?

Accepted Answer

Spinothalamic tract

Question 6

A patient is unable to perform precise, voluntary movements. Which tract is most likely damaged?

Accepted Answer

Corticospinal tract

Question 7

Which of the following best describes the stretch (patellar) reflex?

Accepted Answer

It is a monosynaptic, ipsilateral reflex arc that prevents muscle overstretching.

Question 8

Which nerve, if damaged above its origin, can cause respiratory arrest due to loss of diaphragm function?

Accepted Answer

Phrenic nerve

Question 9

A patient presents with pain radiating from the buttocks down the back of the leg. Which nerve is most likely involved?

Accepted Answer

Sciatic nerve

Question 10

Which of the following best describes a dermatome?

Accepted Answer

A region of skin supplied by a single spinal nerve

Question 11

Which of the following is NOT a function of the spinal cord?

Accepted Answer

Production of red blood cells

Question 12

Which structure anchors the spinal cord to the coccyx and prevents upward movement?

Accepted Answer

Filum terminale

Question 13

Which of the following is TRUE regarding the arrangement of gray and white matter in the spinal cord?

Accepted Answer

White matter is external to gray matter.

Question 14

Which of the following best describes the function of the posterior columns in the spinal cord?

Accepted Answer

Transmit proprioception and discriminative touch

Question 15

A patient with shingles presents with a line of blisters along a specific region of skin. This pattern is best explained by:

Accepted Answer

The involvement of a single dermatome

Question 16

Which of the following is the correct sequence of components in a reflex arc?

Accepted Answer

Receptor → Sensory neuron → Integrating center → Motor neuron → Effector

Question 17

Which of the following statements about spinal nerves is CORRECT?

Accepted Answer

Spinal nerves are mixed nerves containing both sensory and motor fibers.

Question 18

Which of the following is a real-life application of knowledge about dermatomes?

Accepted Answer

Determining the location of a herniated disc based on patterns of numbness

Question 19

Which of the following best describes the cauda equina?

Accepted Answer

A bundle of nerve roots at the inferior end of the spinal cord

Question 20

A patient receives an improperly administered gluteal injection and develops pain radiating down the leg. Which structure was most likely injured?

Accepted Answer

Sciatic nerve

The Spinal Cord and Spinal Nerves: Structure, Function, and Clinical Relevance

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