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प्रश्न
Distinguish between
Sympathetic and parasympathetic nervous system.
उत्तर
| Sympathetic nervous system | Parasympathetic nervous system | |
| 1. | It increases arterial blood pressure. | It decreases arterial blood pressure. |
| 2. | It constricts blood vessels. | It dilates blood vessels. |
| 3. | It dilates pupil of the eye. | It constricts pupil of the eye |
| 4. | It retards peristalsis | It accelerates peristalsis |
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संबंधित प्रश्न
The human body contains a large number of cells A which are very long and branched, and look like electric wires. The longest branch of this cell is B whereas there are many small branches C. Any two A cells do not join to one another completely in the human body. There is a microscopic gap D between every pair of adjacent A cells through which electric impulses can pass by the release of a chemical substance.
(a) What are cells A?
(b) What is the name of (i) branch B, and (ii) branches C?
(c) What is the microscopic gap D known as?
(d) What is the function of cells like A in the human body?
(e) The cells A are of three types. name the three types.
Multiple choice question. Tick (✓) the correct choice:
Pinna is a part of
- inner ear
- external ear
- middle ear
- tongue
Define the term:
Sensory neuron
Name the four principal tastes and the respective regions of the tongue concerned with their perception.
Distinguish between the following pair of words:
Nervous system and hormonal system
The below diagram is the surface of the tongue showing the taste zone.
(i) Label the parts 1-4.
(ii) Where are the receptors for sensations of taste are located?
(iii) Why do people suffering from cold often complain that they cannot taste their food?
State the Location of:
Corpus callosum
Short answer question
Give a reason - Injury to medulla oblongata may prove fatal.
A deep longitudinal fissure divides the telencephalon into ______.
Visceral nervous system comprises of ______.
