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प्रश्न
Complete the following sentence with appropriate Word
A reflex arc in man is best described as movement of stimuli from:
विकल्प
Receptor cell, sensory neuron, relaying neuron, effector muscles
Receptor cell, efferent nerve, relaying neuron, muscles of the body
Receptor cell, spinal cord, motor neuron, relaying neuron
Receptor cell, synapse, motor neuron, relaying neuron
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उत्तर
Receptor cell, sensory neuron, relaying neuron, effector muscles
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संबंधित प्रश्न
Fill in the following blank with suitable word :
A neuron which carries an impulse to the brain is called a ........... neuron.
Which of the following helps in maintaining posture and balance of the human body?
Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
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?
Explain the mechanism of reflex action with the help of a suitable diagram.
What is a reflex action?
Explain the following term :
Conditioned reflex
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
Categorise the following under stimulus and response.
Seeing a green light turning into red at a road crossing before applying the brakes.
