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प्रश्न
Complete the following sentence with appropriate Word
The control of reflex action is through:
विकल्प
Central nervous system
Peripheral nervous system.
Autonomic nervous system
None of the above.
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उत्तर
Central nervous system
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संबंधित प्रश्न
Which part of the eye contains cells which are sensitive to light?
When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers and impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate.
(a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R?
(b) What is (i) neuron S, and (ii) neuron T?
(c) Name the tissue U.
(d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate?
(e) Name the effector in this whole process.
Your are driving your bicycle at a fast speed. Suddenly, a small boy comes in front of your cycle and, without wasting any time in thinking, you immediately apply the brakes and accident is avoided. What name is given to such an action?
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
What is the difference between reflex action and voluntary action?
Explain the mechanism of reflex action with the help of a suitable diagram.
Reflex action is controlled by the
State whether the following is
Constriction of pupil
What will you do if someone pricks your hand with a needle? Elucidate the pathway of response with a neat labelled diagram.
