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प्रश्न
Mention, if the following statement is True or False
A reflex action is a spontaneous response to a stimulus.
पर्याय
True
False
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उत्तर
False
Correct Statement: A reflex action is a spontaneous involuntary response to a stimulus.
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संबंधित प्रश्न
How are involuntary actions and reflex actions different from each other?
With the help of a neat and labelled diagram, describe reflex arc.
Give three examples of reflex actions.
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?
State whether the following is simple reflex, conditioned reflex or neither of the two.
Sudden application of brakes of the cycle on sighting an obstacle in front
State whether the following is
Blinking
Complete the following sentence with appropriate Word
A reflex arc in man is best described as movement of stimuli from:
Which of the following is not an involuntary action?
Categorise the following under stimulus and response.
Seeing a green light turning into red at a road crossing before applying the brakes.
Given alongside is a partial diagrammatic representation of a certain phenomenon pertaining to the nervous system.
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- Name the parts numbered 1-7.
- Name the phenomenon that the diagram depicts and define it.
- Give the technical term for the point of contact between two nerve cells.
- Name the parts not shown in the diagram that should be included to complete the pathway of the phenomenon.
