Question 1

Which of the following best describes the function of the arachnoid mater in the meninges?

Accepted Answer

It is a subdural layer with projections to the pia mater, forming the subarachnoid space for cerebrospinal fluid (CSF).

Question 2

A patient suffers a traumatic injury that tears the dura mater. Which of the following is the most immediate risk associated with this injury?

Accepted Answer

Increased risk of infection and loss of protection for the central nervous system.

Question 3

Which structure is responsible for producing cerebrospinal fluid (CSF) in the brain?

Accepted Answer

Choroid plexus

Question 4

In a lumbar puncture procedure, a needle is inserted to collect CSF. Through which meningeal layers must the needle pass to reach the subarachnoid space?

Accepted Answer

Dura mater and arachnoid mater

Question 5

Which of the following best explains why the cauda equina forms in the adult human spinal cord?

Accepted Answer

The vertebral column grows faster than the spinal cord, causing lower spinal nerves to extend downward before exiting.

Question 6

A patient presents with loss of motor function but preserved sensation in the lower limbs. Which region of the spinal cord is most likely damaged?

Accepted Answer

Ventral horn of the gray matter

Question 7

Which of the following equations best represents the daily production of cerebrospinal fluid (CSF) in an adult human?

Accepted Answer

$$CSF_{daily} = 500 \, mL$$

Question 8

Which of the following is a function of the dural folds within the cranial cavity?

Accepted Answer

They divide the cranial cavity and help hold the brain in place.

Question 9

A patient has a blockage in the superior sagittal sinus. Which of the following is the most likely consequence?

Accepted Answer

Impaired drainage of venous blood from the brain

Question 10

Which vertebral level does the spinal cord typically end in a skeletally mature adult?

Accepted Answer

L1-L2

Question 11

Which of the following best describes the relationship between the central canal of the spinal cord and cerebrospinal fluid (CSF)?

Accepted Answer

The central canal is filled with cerebrospinal fluid and is continuous with the ventricular system of the brain.

Question 12

Which meningeal layer is most closely associated with the formation of the denticulate ligaments?

Accepted Answer

Pia mater

Question 13

A patient is diagnosed with a lesion affecting the ascending tracts of the spinal cord. Which of the following symptoms is most likely to be observed?

Accepted Answer

Loss of sensory perception below the lesion

Question 14

Which of the following statements about the pia mater is correct?

Accepted Answer

It follows all the irregularities of the brain surface and is the closest layer to the brain.

Question 15

Which of the following best describes the direction of information flow in the spinal cord?

Accepted Answer

Sensory information ascends, motor information descends.

Question 16

A patient with a tumor compressing the ventral root of a spinal nerve would most likely experience which of the following?

Accepted Answer

Loss of motor function in the affected area

Question 17

Which of the following is a distinguishing feature of cervical vertebrae compared to thoracic and lumbar vertebrae?

Accepted Answer

Bifid spine and transverse foramen

Question 18

Which of the following best explains the role of arachnoid granulations?

Accepted Answer

They allow CSF to drain from the subarachnoid space into the venous sinuses.

Question 19

A patient presents with a subdural hematoma. Between which two meningeal layers has the blood accumulated?

Accepted Answer

Between the dura mater and the arachnoid mater

Question 20

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

Accepted Answer

It contains cerebrospinal fluid and is continuous with the brain's ventricular system.

Central Nervous System: Spinal Cord & Meninges Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards