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प्रश्न
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.
उत्तर
- Boy A's salivation response to the restaurant menu differs from Boy B's due to conditioned responses.
- When people have previously enjoyed excellent foods, their brains may correlate the sight or fragrance with the expectation of a tasty meal, causing salivation.
- Boy B's acquaintance with the menu items creates a conditioned reaction to salivate.
- Boy A's lack of prior taste associations with the menu items prevents him from salivating and experiencing the conditioned reflex.
संबंधित प्रश्न
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:
Sympathetic and parasympathetic jointly forms.
The Centre for the sense of smell is ______
Brain and spinal cord are the parts of ______ nervous system.
The number of cranial and spinal nerves in a human being are respectively ______.
Write full form of the following abbreviation:
CNS
Write full form of the following abbreviation:
PNS
While watching a scary movie, mention its effects on the following organs by the autonomous nervous system in the table given below: (one has been done for you as an example).
| Organ | Sympathetic System | Parasympathetic System | |
| e.g. Lungs | Dilates bronchi and bronchioles | Constricts bronchi and bronchioles | |
| (1) | Heart | ______ | ______ |
| (2) | Pupil of the eye | ______ | ______ |
| (3) | Salivary gland | ______ | ______ |
