"Central Nervous System and Cerebrospinal Fluid Quiz"

Which of the following structures encloses the brain?

• • A) Vertebral column

• • B) Cranium

• • C) Meninges

• • D) Spinal cord

What is the outermost protective membrane of the brain called?

• • A) Pia mater

• • B) Arachnoid mater

• • C) Dura mater

• • D) Subarachnoid space

Which layer of the meninges is thin, non-vascular, and web-like?

• • A) Dura mater

• • B) Pia mater

• • C) Arachnoid mater

• • D) Subdural space

What fluid is present in and around the CNS?

• • A) Synovial fluid

• • B) Cerebrospinal fluid (CSF)

• • C) Interstitial fluid

• • D) Lymph

Which cells secrete cerebrospinal fluid (CSF)?

• • A) Astrocytes

• • B) Ependymal cells

• • C) Oligodendrocytes

• • D) Schwann cells

What is the specific gravity of cerebrospinal fluid (CSF)?

• • A) 1.001

• • B) 1.005

• • C) 1.010

• • D) 1.015

Which structure helps in draining CSF from the brain to the outside?

• • A) Ventricles of the brain

• • B) Central canal of the spinal cord

• • C) Openings in the roof of the medulla oblongata

• • D) Subdural space

Which membrane provides a rich supply of oxygen to the brain?

• • A) Dura mater

• • B) Arachnoid mater

• • C) Pia mater

• • D) Subarachnoid space

What is the primary function of cerebrospinal fluid (CSF)?

• • A) Act as a shock absorber

• • B) Provide nutrients to the brain

• • C) Remove waste from the brain

• • D) All of the above

What is the total volume of cerebrospinal fluid (CSF) present in and around the CNS?

• • A) 50-70 cc

• • B) 70-90 cc

• • C) 100-120 cc

• • D) 150-170 cc