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

The medulla contains centers which control

Trembling,depression,fear,and phobia are signs of:

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.

Give a brief account of
$(a)$ Mechanism of synaptic transmission
$(b)$ Mechanism of vision
$(c)$ Mechanism of hearing

Match the following:
Receptors | Stimuli
$A.$ Statoreceptors | $1.$ Frequencies of vibrations
$B.$ Gustatory receptors | $2.$ Hunger and thirst
$C.$ Enteroreceptors | $3.$ Taste
$D.$ Mechanoreceptors | $4.$ Equilibrium
The correct pairing sequence is: