<span>The ventricular system consists of four ventricles that are interconnected in the brain.
The third ventricle</span> is the portion of the ventricular system is found within the diencephalon. It is a median cleft in the diencephalon between the two thalami, and is filled with cerebrospinal fluid (CSF).
The hypothalamus is the gland located within the floor of the this ventricle.
Answer:
https://youtu.be/dQw4w9WgXcQ
Explanation:
copy it open a new tab paste it search it and then theres a vid of me explaing it and the answer
Your answer is B, cell wall.