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प्रश्न
Mention, if the following statement is True or False
Reflex action involves brain
पर्याय
True
False
उत्तर
False
Correct Statement: Reflex action involves the spinal cord
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संबंधित प्रश्न
Briefly explain the following terms : Reflex action
Give the functions of medulla.
Which of the following helps in maintaining posture and balance of the human body?
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
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?
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?
What is a reflex action?
Explain the following term :
Conditioned reflex
Mention, if the following statement is True or False
A reflex action is a spontaneous response to a stimulus.
Differentiate between Voluntary and involuntary actions.
