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प्रश्न
Which part of the eye contains cells which are sensitive to light?
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उत्तर १
The retina of an eye contains light-sensitive cells.
उत्तर २
The retina is the part of the eye which contains cells that are sensitive to light.
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संबंधित प्रश्न
Give examples of unconditional reflexes
State one function each of cerebellum and pons.
Give three examples of reflex actions.
Fill in the following blank with suitable word :
A neuron which carries an impulse to the brain is called a ........... neuron.
Give the various functions of brain.
The gustatory receptors of our body are in one of the following organs. This organ is :
a) ear
(b) nose
(c) tongue
(d) skin
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 the difference between reflex action and voluntary action?
List in tabular form three distinguishing features between cerebrum and cerebellum.
State whether the following is simple reflex, conditioned reflex or neither of the two.
Lifting up a book
State whether the following is simple reflex, conditioned reflex or neither of the two.
Knitting without looking
State whether the following is
Blinking
State whether the following is
Salivation when food is put in the mouth.
Give Technical Term:
The scientist, who conducted experiment on a dog to show conditioned reflex
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
A change in the environment that causes an animal to react is called ______.
Reflex actions are mediated through ____________.
Which of the following is not an involuntary action?
Which sensory organ is involved in vertigo (sensation of oneself or objects spinning around)?
