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प्रश्न
Answer the following questions briefly:
Explain how the human eye adapts itself to bright light and dim light.
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उत्तर
The amount of light intering the eye is controlled by muscles of iris. The pupil become layer in less light to allow more light to goin and in bright light it consiricts to restrict the amount of light going in.
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संबंधित प्रश्न
Write the names and functions of three parts of human nervous system in which it is divided.
Nervous system is absent in _____________.
What is a neuron?
The spinal cord originates from:
The junction between two adjacent neurons is called :
(a) nerve junction
(b) sensory junction
(c) synapse
(d) neuro-muscular joint
Write one word in the space provided to complete the second pair of the related words pertaining to nervous system.
Memory : cerebrum : : breathing :
Balance : cerebellum : : reasoning :
Name the four principal tastes and the respective regions of the tongue concerned with their perception.
Give Technical Term:
The neuron which conducts impulse from the central nervous system to the organs.
______ and ______ increases the surface area of cerebrum.
Which nerve controls the movement of shoulder muscle and neck?
