Question

How many cerebral ventricles do humans have?

• A. 2
• B. 3
• C. 4
• D. 5

Hint:

The four ventricles (two lateral, third, and fourth) are interconnected and play a vital role in maintaining the homeostasis of the brain's environment.

Answer 1

The Correct Option is C

Humans have a total of four cerebral ventricles. These ventricles are interconnected cavities within the brain that produce and are a conduit for cerebrospinal fluid (CSF). The four ventricles are:

• Lateral Ventricles: There are two lateral ventricles, one in each hemisphere of the brain. These are the largest ventricles and they are located symmetrically.
• Third Ventricle: This is a narrow ventricle located in the midline of the brain, beneath the corpus callosum and above the brainstem. It connects to the lateral ventricles via the interventricular foramina (also known as the foramina of Monro).
• Fourth Ventricle: Located posterior to the pons and medulla oblongata and anterior to the cerebellum, it connects to the third ventricle via the cerebral aqueduct (aqueduct of Sylvius) and transitions to become the central canal of the spinal cord.

Thus, the correct answer is 4, as humans possess four cerebral ventricles.