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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
Nervous system is absent in _____________.
The junction between two adjacent neurons is called :
(a) nerve junction
(b) sensory junction
(c) synapse
(d) neuro-muscular joint
Fill in the blank:
Peripheral nervous system consists of _________.
Multiple choice question. Tick (✓) the correct choice:
The coloured part of the eye is called
- retina
- iris
- lens
- pupil
Fill in the blank:
Basic structural unit of the nervous system is the ..................
Differentiate between:
Cerebrum and Cerebellum.
Give Technical Term:
The chemical messenger by which the nerve impulse travels from one neuron to the other.
Complete the following sentence with appropriate word :
A nerve chain between a receptor and an effector organ is called _________.
Which of the following is the correct description of Gyri and sulci?
Hearing is controlled by ______
