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प्रश्न
Reflex action is controlled by the
पर्याय
brain
spinal cord
autonomic
peripheral nervous system
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उत्तर
spinal cord
संबंधित प्रश्न
A cell (or group of cells) in a sense organ which is sensitive to a particular type of stimulus is called :
(a) interceptor
(b) effector
(c) receptor
(d) acceptor
Which of the following are cerebral reflexes?
(i) a person pulls away his hand on touching a hot object
(ii) a person spits out immediately when a fly enters his mouth while talking
(iii) A person walking bare foot lifts his foot at once on stepping on to a nail
(iv) A person's pupil contracts at once in the presence of bright light
(a) (i) and (ii) (b) (ii) and (iii) (c) (iii) and (iv) (d) (ii) and (iv)
Write down the following activities in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
State whether the following is
Constriction of pupil
State whether the following is
The sudden application of brakes without thinking
Mention, if the following statement is True or False
Reflex action is a unit of nervous action
Which of the following is an example of unconditioned reflex?
Why have reflex arcs evolved in animals?
Categorise the following under stimulus and response.
Pain in the eye if something falls into it.
Given alongside is a partial diagrammatic representation of a certain phenomenon pertaining to the nervous system.
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- 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.
