Which of the following is/are controlled by the human brain?
$(a)$. Balance of the body
$(b)$. Circadian rhythm of the body
$(c)$. Human behaviour
$(d)$. Functioning of heart and kidneys

Compare the following: (Any two)
$(a)$ Central neural system $(CNS)$ and Peripheral neural system $(PNS)$
$(b)$ Resting potential and action potential
$(c)$ Choroid and retina

Which of the following is an example of the action of the autonomous nervous system?

Briefly describe the structure of the following:
$(a)$ Brain
$(b)$ Eye
$(c)$ Ear

Injury to the $Vagus$ nerve ($CN$ $X$) in humans is not likely to affect which of the following?

Glucose and oxygen are required by the brain for a constant supply of energy to control the functions of our body organs. What will be the consequences if the brain is deprived of oxygen and glucose?
$I.$ Brain deprived of oxygen for just $5$ minutes will get permanently damaged.
$II.$ Glucose is important in the nerve impulse conduction.
$III.$ One side of the brain is unable to know what the other side is doing when it is deprived of oxygen.
$IV.$ Mental confusion will result if the brain is deprived of glucose.