The part of the human brain located between the thalamus/hypothalamus and the pons is:

The $ramus$ $communicans$ of the spinal nerves:

Assertion: Cerebellum has additional space for many more neurons.
Reason: Cerebellum has a very convoluted surface.

Consider the following statements regarding the human brain:
$1.$ The cerebrum has a highly convoluted surface,which provides space for more neurons.
$2.$ The medulla oblongata is connected to the spinal cord.
$3.$ The medulla oblongata contains centers for respiration,cardiovascular reflexes,and gastric secretions.
Which of the above statements are correct?

Cerebral hemispheres are the centres of

White matter consists of