Explain the difference between each of the following pairs of terms :
(a) receptor and effector
(b) cerebrum and cerebellum

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Solution

(a)

Receptor Effector

A receptor is a cell (or a group of cells) present in a sense organ which is sensitive to a particular types of stimuli such as light, sound, smell, taste, heat and pressure. An effector is a part of the body which can respond to a stimulus according to the instructions sent from the nervous system.

Eyes have light receptors; ears have sound receptors, etc. Muscles and glands are examples of effectors.

(b)

Cerebrum Cerebellum

The cerebrum is a part of the forebrain. The cerebellum is a part of the hindbrain.

It is the site of our faculties such as learning, reasoning, intelligence, personality and memory. It helps in maintaining posture and balance of the body. It also enables us to make precise and accurate movements.

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Similar questions

Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

(a) Stimulus : Receptor :: Impulse : ..............

(b) Cerebrum : Diencephalon :: Cerebellum : ................

Differentiate between the following pairs with reference to the aspect in brackets.

(a) Cerebrum and cerebellum (function).

(b) Sympathetic nervous system and parasympathetic nervous system (overall effect on the body).

(d) Medulla oblongata & Cerebellum (function).

(e) Cerebrum and spinal cord (arrangement of cytons and axons of neurons).

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Receptor	Effector
A receptor is a cell (or a group of cells) present in a sense organ which is sensitive to a particular types of stimuli such as light, sound, smell, taste, heat and pressure.	An effector is a part of the body which can respond to a stimulus according to the instructions sent from the nervous system.
Eyes have light receptors; ears have sound receptors, etc.	Muscles and glands are examples of effectors.

Cerebrum	Cerebellum
The cerebrum is a part of the forebrain.	The cerebellum is a part of the hindbrain.
It is the site of our faculties such as learning, reasoning, intelligence, personality and memory.	It helps in maintaining posture and balance of the body. It also enables us to make precise and accurate movements.