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प्रश्न
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उत्तर
Following are the two examples of reflex actions in our daily life :
(i) Removing hand suddenly when pricked by a thorn.
(ii) Blinking of eyelids on exposure to light.
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संबंधित प्रश्न
With the help of a neat and labelled diagram, describe reflex arc.
Give three examples of reflex actions.
What is meant by receptors and effectors? Give two examples of each.
What is the difference between a voluntary and an involuntary action? Which kind of action is digestion? Explain your choice.
One of the following gives the correct sequence of the components in a reflex arc. This is:
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
(a) What is P? Name five organs which contain cells (or group of cells) like P.
(b) Name the nerves Q.
(c) What is R? Give two examples of R.
(d) Name nerves S.
(e) How do messages travel through the nerves Q and S?
With the help of suitable example, describe reflex action.
Give Technical Term:
The scientist, who conducted experiment on a dog to show conditioned reflex
Give Technical Term:
Response to a stimulus without the intervention of the will of an animal.
