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प्रश्न
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
विकल्प
True
False
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उत्तर
True
APPEARS IN
संबंधित प्रश्न
What is the role of the brain in reflex action?
Name two parts of the body which contain receptors of chemical stimuli.
What are the various sense organs in our body?
What is a reflex action? Explain with the help of an example.
Cerbellum, medulla and pons are the parts of :
(a) mid-brain
(b) hind-brain
(c) forebrain
(d) spinal cord
The contraction of pupil of the eye in the presence of bright light is an example of :
(a) Voluntary reflex
(b) Spinal reflex
(c) Cerebral reflex
(d) Adrenal reflex
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 do we refer to in the nervous system when we say:
Natural and conditioned …………………
Which of the following is not involved in Knee-jerk reflex?
Categorise the following under stimulus and response.
Withdrawal of hand on touching a hot plate
