The smallest cranial nerve of the body is:

What is the full form of $CNS$?

The parasympathetic nervous system increases the activity of which of the following?

Select the correct option:
$(1)$ The $Hypothalamus$ / $Thalamus$ controls body temperature,hunger,and thirst.
$(2)$ $Bipolar$ neurons are found in the embryonic stage / $Cerebral$ $cortex$.

Which cranial nerve has the highest number of branches?

The $III$ ventricle of the human brain is connected posteriorly to the $IV$ ventricle through . . . . . . .