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Question
Explain the following term :
Autonomic nervous system
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Solution
It is a part of the peripheral nervous system. It consists of a pair of chains of nerves and ganglia on either side of the backbone. It controls the involuntary actions of the internal organs.
RELATED QUESTIONS
The insulating sheath covering the neural axon is called.
Name the following:
The junction between two nerve cells.
Why do you call the spinal cord and the brain as the central nervous system?
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.
Explain the divisions of the 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.
