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प्रश्न
State one function each of cerebellum and pons.
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उत्तर
The pons participate in regulating respiration. The cerebellum helps in maintaining balance and posture of the body.
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संबंधित प्रश्न
With the help of a neat and labelled diagram, describe reflex arc.
Name two parts of the body which contain receptors of chemical stimuli.
Which part of the eye contains cells which are sensitive to light?
What is meant by receptors and effectors? Give two examples of each.
Explain the difference between of the following pair of terms :
receptor and effector
A cell (or group of cells) in a sense organ which is sensitive to a particular type of stimulus is called :
(a) interceptor
(b) effector
(c) receptor
(d) acceptor
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
Which of the following statements is correct about receptors?
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
(a) What is P? Name five organs which contain cells (or group of cells) like P.
(b) Name the nerves Q.
(c) What is R? Give two examples of R.
(d) Name nerves S.
(e) How do messages travel through the nerves Q and S?
Your are driving your bicycle at a fast speed. Suddenly, a small boy comes in front of your cycle and, without wasting any time in thinking, you immediately apply the brakes and accident is avoided. What name is given to such an action?
State whether the following is simple reflex, conditioned reflex or neither of the two.
Contraction of eye pupil
Explain the mechanism of reflex action with the help of a suitable diagram.
Give one example of a conditioned reflex in your own life.
State whether the following is
Sneezing
State whether the following is
Cleaning
What will you do if someone pricks your hand with a needle? Elucidate the pathway of response with a neat labelled diagram.
Which of the following is an example of unconditioned reflex?
Which one of the following is not a simple reflex?
Why have reflex arcs evolved in animals?
Categorise the following under stimulus and response.
Withdrawal of hand on touching a hot plate
