Question 4:
What is the function of receptors in our body? Think of situations where receptors do
not work properly. What problems are likely to arise?
Answer:
Receptors are sensory structures (organs/tissues or cells) present all over the body.
The receptors are either grouped in case of eye or ear, or scattered in case of skin.
Functions of receptors:
(i) They sense the external stimuli such as heat or pain.
(ii) They also trigger an impulse in the sensory neuron which sends message to the
spinal cord.When the receptors are damaged, the external stimuli transferring
signals to the brain are not felt. For example, in the case of damaged receptors,
if we accidentally touch any hot object, then our hands might get burnt as
damaged receptors cannot perceive the external stimuli of heat and pain.
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