Which of the following connects the lateral ventricle of the diocoel in the brain with the third ventricle?

Which of the following statements are correct about the cortex of the cerebrum? Choose the correct codes given below:
$(I)$. It consists of grey matter.
$(II)$. It shows prominent folds.
$(III)$. It consists of white matter.
$(IV)$. It contains motor areas,sensory areas,and association areas.

Read the following statements carefully and select the correct option.
$I.$ The medulla is connected to the spinal cord.
$II.$ Medulla contains controlling centers for respiration,cardiovascular reflexes and gastric secretion.
$III.$ Cerebellum has very convoluted surface in order to provide the additional space for more neurons.

Most important function of $CSF$ is

Which of the following are controlled by the limbic system?
$(a)$ Emotional reactions
$(b)$ Sexual behavior
$(c)$ Respiration
$(d)$ Vision
$(e)$ Body balance
Choose the correct option.

The cerebral hemispheres of a rat are connected by: