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प्रश्न
Why do you call the spinal cord and the brain as the central nervous system?
Give reason:
The brain and the spinal cord are referred to as the central nervous system.
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उत्तर
- The brain and the spinal cord lie in the skull and the vertebral column, respectively.
- They have an important role to play because they control all bodily activities.
- A stimulus from any body part is always carried to the brain or spinal cord for the correct response.
- A response to a stimulus is also generated in the central nervous system. Therefore, the brain and the spinal cord are called the central nervous system.
संबंधित प्रश्न
Aqueous humour is present between the :
(A) Lens and Retina
(B) Iris and Lens
(C) Cornea and Iris
(D) Cornea and Lens
The insulating sheath covering the neural axon is called.
Given below are a few situations. What effective change will occur in the organ/body part mentioned and which part (sympathetic or parasympathetic) of the autonomic nervous system brings it about?
| Situation | Organ/body part | Change/action | Part of autonomic nervous system involved |
| 1. You have entered a dark room | Eye | ||
| 2. Your body is consuming lot of glucose while running a race | Liver | ||
| 3. You are chewing a tasty food | Salivary gland | ||
| 4. You are running a race | Adrenal gland | ||
| 5. You are retiring to bed for sleep | Heart | ||
| 6. You are shivering in intense cold | Body hairs |
Given below is the partially incomplete scheme of the components of peripheral nervous system. Fill up the blanks numbered (1)-(12):
Name the following:
Nervous system including brain and spinal cord.
Define the following:
Cyton
Brain and spinal cord are the parts of ______ nervous system.
Name the following:
Two parts of the autonomic nervous system
Write full form of the following abbreviation:
PNS
Two hungry boys (A and B) enter a restaurant and see the menu. Boy B starts salivating but not A. Explain the reason for this difference.
