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प्रश्न
Give Reason:
The spinal cord and brain are called the central nervous system.
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उत्तर
Because they give rise to all the nerves and control all the actions of the body.
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संबंधित प्रश्न
Multiple choice question. Tick (✓) the correct choice:
Nervous system in humans consists of
- brain and nerves
- brain and spinal cord
- brain, spinal cord and nerves
- none of the above
Multiple choice question. Tick (✓) the correct choice:
The brown pigment melanin is present in ____ of skin.
- Epidermis
- Fat cells
- Dermis
- Hair follicles.
Answer the following questions briefly:
Explain how the human eye adapts itself to bright light and dim light.
Plants do not have any nervous system but yet, if we touch a sensitive plant, some observable changes take place in its leaves. Explain how could this plant respond to the external stimuli and how it is communicated.
Choose the Odd One Out:
Multiple choice question.
___________ is in direct contact of brain in human.
Degeneration of dopamine producing neurons in the CNS causes ______ disease.
Which cells of PNS secrete myelin sheath around the nerves?
Which is the ninth cranial nerve in humans?
Specific gravity of CSF is ______.
