Question

Differentiate between the following pairs of terms:
(i) Sensory nerve and motor nerve
(ii) Cerebrum and cerebellum.
(iii) Sympathetic and parasympathetic nervous system

Answer 1

Answer:

i)Sensory nerve and motor nerve

Sensory nerve :- Recieves message from receptors present on our skin and then transfer the message to central nervous system.

Motor nerve :- Recieve message from central nervous and then transfer it to other parts.

ii) Cerebrum and Cerebellum

Cerebrum :- Main thinking part of our brain. It is the part of our Fore brain.

Cerebellum :- This part of our brain helps us to control voluntary actions like Vomiting, Salivation, Blood Pressure, etc. Cerebellum is the part of hind brain

Answer 2

$\huge\mathrm\red{Answer}$

• conditioned reflex is the involuntary spontaneous automatic response brought about due to some previously learned experiences .

• association neuron is located in the brain and spinal cord and interconnects the motor neuron and the sensory neuron.

• automatic nervous system is the nervous system which consists of a pair of chain of nerves and ganglia on either side of the backbone . It helps to control the involuntary actions of the internal organs .

• the outer region of cortex of the cerebrum consists of cell body or cyton of the neurones and being grayish in colour it is known as grey matter . Grey matter folds to form the convulations .