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प्रश्न
Think of situations where receptors do not work properly. What problems are likely to arise?
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उत्तर
When receptors do not work properly, the environmental stimuli are not able to create nerve impulses and the body does not respond. For example, in the case of damaged receptors, if we accidentally touch any hot object, then our hands might get burned as damaged receptors cannot perceive the external stimuli of heat and pain.
संबंधित प्रश्न
Write the names of the indicated parts 1 to 6 in the following diagram:
What is voluntary nervous system? Explain the working of the voluntary nervous system with an example.
Draw a labelled diagram of a neuron.
Name the two types of coordination which take place in our body.
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.
Explain the structure of the brain.
Complete the following table by filling in the blank spaces.
| Structure | Function |
| Yellow Spot | |
| Transfers impulse from inner ear to brain | |
| Helps to change the focal length of the eye lens | |
| Spinal cord | |
| Oval window | |
| Dynamic equilibrium |
Name the following:
The peripheral matter of spinal nerve.
Name the following:
The peripheral matter of the brain.
Distinguish between the following pair of words:
Nervous system and hormonal system
Give Reason:
A person after consuming alcohol walks clumsily.
Draw well labeled diagram of a ‘Neuron’ and name the following parts:
(1) Node of Ranvier (2) Nissil granules (3) Cyton
Explain the Term: Voluntary-action
Explain the Term: Reflex action
What does the cerebellum of the brain control?
Long answer question
Draw the neat labelled diagram of L. S. of the human brain.
Which of the following cranial nerves are mixed type?
All of the following are true for human brain, EXCEPT ______.
Identify the sensory cranial nerves ____________.
