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प्रश्न
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)
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उत्तर
(d) (ii) and (iv)
Cerebral reflexes are those reflex actions which involve the brain. They occur in the organs present in the head as these organs are directly connected to the brain.
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संबंधित प्रश्न
With the help of a neat and labelled diagram, describe reflex arc.
Give examples of unconditional reflexes
Briefly explain the following terms : Reflex action
If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?
Explain the difference between of the following pair of terms :
receptor and effector
Explain the difference between of the following pair of terms :
cerebrum and cerebellum
One of the following controls the peristaltic movements of alimentary canal. This one is :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
The part of brain which controls the involuntary action such as heart beat, breathing, blood pressure, etc. is :
(a) pons
(b) medulla
(c) cerebrum
(d) cerebellum
The olfactory receptors in humans are located in :
(a) eyes
(b) tongue
(c) ears
(d) nose
Multiple choice question. Tick (✓) the correct choice:
Reflex actions occur under the control of
- brain
- medulla oblongata
- spinal cord
- cerebrum
State whether the following is simple reflex, conditioned reflex or neither of the two:
Knitting without looking: …………………..
List in tabular form three distinguishing features between cerebrum and cerebellum.
State whether the following is simple reflex, conditioned reflex or neither of the two.
Lifting up a book
State whether the following is simple reflex, conditioned reflex or neither of the two.
Knitting without looking
State whether the following is
Blinking
State whether the following is
Cleaning
Give Reason:
The hand automatically shows the direction to turn a cycle without thinking.
Give Technical Term:
The scientist, who conducted experiment on a dog to show conditioned reflex
Mention, if the following statement is True or False
Reflex action involves brain
Complete the following sentence with appropriate Word
The control of reflex action is through:
