The number of spinal nerves in humans is (in $pairs$)

Write short notes on the following: (Any four)
$(a)$ Neural coordination $(b)$ Forebrain $(c)$ Midbrain $(d)$ Hindbrain $(e)$ Retina

Assertion : Midbrain and hindbrain (except cerebellum) form the brain stem.
Reason : Cerebellum has very convoluted surface in order to provide the additional space for many more neurons.

The limbic lobe or limbic system,along with $.......$,regulates sexual behavior,the expression of emotional reactions,and motivation.

Given below are two statements with respect to the limbic system.
Statement $I$: The limbic system is responsible for emotional reactions and memory.
Statement $II$: It is formed mainly of the cerebrum,pons varolii,and cerebellum.
Choose the most appropriate answer from the options given below.

All spinal nerves are.......