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प्रश्न
The involuntary actions in the body are controlled by :
(a) medulla in forebrain
(b)medulla in hindbrain
(c) medulla in spinal cord
(d) medulla in midbrain
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उत्तर
(b) medulla in the hindbrain
The medulla controls various involuntary actions such as heart beat, breathing, blood pressure and peristaltic movement in the body.
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संबंधित प्रश्न
What is the role of the brain in reflex action?
How are involuntary actions and reflex actions different from each other?
State whether coughing is a voluntary action or reflex action.
What is spinal cord? What is its main function?
A person walks across a room in barefeet and puts his foot on a drawing pin lying on the floor. He lets out a cry. Explain what happens in his nervous system in bringing about this response.
Which of the following are cerebral reflexes?
(i) a person pulls away his hand on touching a hot object
(ii) a person spits out immediately when a fly enters his mouth while talking
(iii) A person walking bare foot lifts his foot at once on stepping on to a nail
(iv) A person's pupil contracts at once in the presence of bright light
(a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (ii) and (iv)
One of the following controls the peristaltic movements of alimentary canal. This one is :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
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Reflex action
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Reflex action involves brain
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A reflex arc in man is best described as movement of stimuli from:
In reflex action, the reflex arc is formed by ______
The given diagrammatic representation of reflex action shows knee jerk reflex.
Identify the parts labeled as A to E and select the correct option.
