Question 1

Which of the following best describes the gross anatomical location of the spinal cord in the human body?

Accepted Answer

It extends from the foramen magnum to the level of the first or second lumbar vertebra, running within the vertebral canal.

Question 2

In a cross-sectional view of the spinal cord, which structure contains cerebrospinal fluid (CSF)?

Accepted Answer

The central canal

Question 3

Which of the following is the correct order of the spinal meninges from superficial to deep?

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 4

Which space is located between the arachnoid mater and the pia mater, and what is its significance?

Accepted Answer

Subarachnoid space; contains cerebrospinal fluid

Question 5

A patient suffers a lesion that damages only the ascending tracts of the spinal cord. Which function is most likely to be impaired?

Accepted Answer

Sensory perception from the body to the brain

Question 6

Which of the following best describes the difference between ascending and descending tracts in the spinal cord?

Accepted Answer

Ascending tracts carry sensory information to the brain; descending tracts carry motor commands from the brain.

Question 7

Which anatomical feature divides the spinal cord into right and left halves on the anterior side?

Accepted Answer

Anterior median fissure

Question 8

During a lumbar puncture, a needle is inserted to collect cerebrospinal fluid. Into which space is the needle inserted?

Accepted Answer

Subarachnoid space

Question 9

Which of the following is a function of the spinal meninges?

Accepted Answer

Protecting the spinal cord and providing a supportive framework

Question 10

A patient presents with loss of motor function below the site of a spinal cord injury, but sensory function remains intact. Which tracts are most likely damaged?

Accepted Answer

Descending tracts

Question 11

Which of the following best describes the white matter of the spinal cord in cross-section?

Accepted Answer

It surrounds the gray matter and contains myelinated axons.

Question 12

Which of the following is true regarding the epidural space?

Accepted Answer

It is located between the dura mater and the vertebral canal and contains adipose tissue.

Question 13

Which of the following best explains why the spinal cord does not extend the entire length of the vertebral column in adults?

Accepted Answer

The vertebral column grows more rapidly than the spinal cord during development.

Question 14

Which of the following is a real-life consequence of damage to the dorsal (posterior) horn of the spinal cord?

Accepted Answer

Loss of sensory perception from the affected region

Question 15

Which of the following equations best represents the relationship between the number of spinal nerves ($$N$$), the number of vertebrae ($$V$$), and the number of cervical nerves ($$C) in $$humans?

Accepted Answer

$$N = V + 1$$

The Spinal Cord: Structure, Meninges, and Tracts

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