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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
Which part of the eye contains cells which are sensitive to light?
Fill in the following blanks with suitable words :
Our.............system allows us to react to our surroundings. Information from receptors passes along...........neurons to our brain. Our brain sends impulses along..........neurons to our muscles.
What is meant by receptors and effectors? Give two examples of each.
Give the functions of medulla.
What is a reflex action? Explain with the help of an example.
Define reflex arc. Give the flow chart of a spinal reflex arc.
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)
The contraction of pupil of the eye in the presence of bright light is an example of :
(a) Voluntary reflex
(b) Spinal reflex
(c) Cerebral reflex
(d) Adrenal reflex
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The smell of good food causes watering of your mouth. It is a
State whether the following is simple reflex, conditioned reflex or neither of the two.
Contraction of eye pupil
What is a reflex action?
Reflex action is controlled by the
State whether the following is simple reflex, conditioned reflex or neither of the two.
Lifting up a book
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Playing on the Keyboard
What type of reflex is the following?
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Mention, if the following statement is True or False
Reflex action involves brain
Mention, if the following statement is True or False
A reflex action is a spontaneous response to a stimulus.
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Reflex arc allows the rapid response of the body to a stimulus.
Which of the following is not an involuntary action?
