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प्रश्न
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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उत्तर
(d) medulla
The medulla controls the involuntary actions like the peristaltic movements of the alimentary canal
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संबंधित प्रश्न
Briefly explain the following terms : Reflex action
State whether coughing is a voluntary action or reflex action.
Fill in the following blank with suitable word :
A neuron which carries an impulse to the brain is called a ........... neuron.
Give the functions of medulla.
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.
Explain the difference between of the following pair of terms :
cerebrum and cerebellum
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
One of the following gives the correct sequence of the components in a reflex arc. This is:
A cylindrical structure P in our body begins in continuation with medulla and extends downwards. It is enclosed in a bony cage Q and surrounded by membranes R. As many as x pairs of nerves arise from the structure P. The structure P is involved in the reflex actions of our body and conduction of nerve impulses to and from another organ S of our body with which it forms CNS.
(a) Name the structure P.
(b) Name (i) bony cage Q, and (ii) membranes R.
(c) How much is x?
(d) Name the organs S.
(e) What are the reflexes involving structure P only known as?
Put a tick mark (✓) against the correct alternative in the following statement:
The smell of good food causes watering of your mouth. It is a
Differentiate between natural reflex and conditioned reflex. Give examples to illustrate your answer.
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
State whether the following is simple reflex, conditioned reflex or neither of the two:
Knitting without looking: …………………..
What is the difference between reflex action and voluntary action?
Define the following:
Reflex action
Reflex action is controlled by the
State whether the following is
Constriction of pupil
Complete the following sentence with appropriate Word
Which of the following is not a natural reflex action?
Give an example for conditioned reflexes.
Given alongside is a partial diagrammatic representation of a certain phenomenon pertaining to the nervous system.
 |
- Name the parts numbered 1-7.
- Name the phenomenon that the diagram depicts and define it.
- Give the technical term for the point of contact between two nerve cells.
- Name the parts not shown in the diagram that should be included to complete the pathway of the phenomenon.
