Question

(a) name the part of brain which controls (i) voluntary action (ii) Involuntary action (b) what is the significance of the peripheral nervous system ? name the components of these nervous system and distinguish between the origin of the two

Answer 1

a) the part which controls voluntary action is cerebellum
b) involuntary actions --- medulla
c) it helps in facilitating the communication between central nervous system and the other body parts. the components are spinal nerve, cranial nerve.
cranial nerve --- there are 12 pair of cranial nerve they emerge from brain
spinal nerve  --- there are 31 pair of spinal nerve they emerge from spine

hope it helps................

Answer 2

(i) Voluntary action :-

$\implies\textsf{Cerebellum}$

(ii) Involuntary action :-

$\implies\textsf{Medulla}$

(b)

Human nervous system consist of two part

• Central Nervous System (CNS)
• Peripheral Nervous System (PNS)

PNS consist of :-

• Cranial Nervers which arises from the brain there are 12 pair of nerve.
• Spinal Nerves which arises from spinal cord there are 31 pair of nerve.