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प्रश्न
What is a reflex action?
What is meant by Reflex action?
उत्तर १
Reflex action is a sudden, spontaneous, automatic, involuntary response to a stimulus.
उत्तर २
Reflex action is an autonomic, quick and involuntary action in the body brought about by a stimulus.
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संबंधित प्रश्न
State whether coughing is a voluntary action or reflex action.
Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
One of the following controls the peristaltic movements of alimentary canal. This one is :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
Which of the following statements are true?
(i) sudden action in response to something in the environment is called reflex action
(ii) sensory neurons carry electrical signals from spinal cord to muscles in a reflex action
(iii) motor neurons carry signals from receptors to spinal cord in a reflex action
(iv) the pathway of transmitting signals from a receptor to a muscle is a reflex action
Explain the mechanism of reflex action with the help of a suitable diagram.
List in tabular form three distinguishing features between cerebrum and cerebellum.
Give one example of a conditioned reflex in your own life.
State whether the following is
Salivation when food is put in the mouth.
Give Reason:
The hand automatically shows the direction to turn a cycle without thinking.
What will you do if someone pricks your hand with a needle? Elucidate the pathway of response with a neat labelled diagram.
