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प्रश्न
What are the various sense organs in our body?
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उत्तर
There are five sense organs in our body. They are the eyes, the ears, the nose, the tongue and the skin.
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संबंधित प्रश्न
With the help of a neat and labelled diagram, describe reflex arc.
State one function each of cerebellum and pons.
Fill in the following blank with suitable word :
A neuron which carries an impulse to the brain is called a ........... neuron.
What is spinal cord? What is its main function?
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 is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
One of the following controls the peristaltic movements of alimentary canal. This one is :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
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?
Write down the following activities in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
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?
Multiple choice question. Tick (✓) the correct choice:
Reflex actions occur under the control of
- brain
- medulla oblongata
- spinal cord
- cerebrum
Complete the following statement by choosing the correct alternative from the choice given in bracker:
Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system
what do we refer to in the nervous system when we say:
Natural and conditioned …………………
Reflex action is controlled by the
Explain the following term :
Conditioned reflex
State whether the following is
Blinking
Give Technical Term:
The scientist, who conducted experiment on a dog to show conditioned reflex
Which sensory organ is involved in vertigo (sensation of oneself or objects spinning around)?
State whether the following is simple reflex, conditioned reflex or neither of the two.
Sneezing
