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प्रश्न
Which of the following is not an involuntary action?
पर्याय
Vomiting
Salivation
Heart beat
Chewing
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उत्तर
Chewing
Explanation -
Involuntary action is the actions which are happening "without" the conscious choice of the organism. So chewing which is under conscious control is a voluntary action.
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संबंधित प्रश्न
How do we detect the smell of an agarbatti (incense stick)?
With the help of a neat and labelled diagram, describe reflex arc.
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Fill in the following blanks with suitable words :
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When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the smell of the food?
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(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
Which of the following statements is correct about receptors?
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.
With the help of suitable example, describe reflex action.
Multiple choice question. Tick (✓) the correct choice:
Reflex actions occur under the control of
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- medulla oblongata
- spinal cord
- cerebrum
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Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Receptor : Sensory nerve :: Motor nerve : ______.
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Two hungry boys (A and B) enter a restaurant and find a table decorated as follows:
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Complete the following sentence with appropriate Word
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