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प्रश्न
How is the mode of action in beating of the heart different from reflex actions? Give four examples.
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उत्तर
| beating of heart | reflex actions |
| Involuntary actions are the actions which are not controlled by our will. |
Reflex actions are the sudden action in response to something. |
| They do not need any kind of stimulus to work. |
They required stimulus for its action. |
| These actions are regulated by the brain. | These actions are regulated by the spinal cord. |
| They do not involve skeletal muscle. | They do involve skeletal muscle. |
|
These actions are performed |
These actions are produced in |
| This action may be quick or slow. | Reflex actions are always quick. |
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संबंधित प्रश्न
How do we detect the smell of an agarbatti (incense stick)?
Which of the following is not a natural reflex action?
A. Knee-jerk
B. Blinking of eyes due to strong light
C. Salivation at the sight of food
D. Sneezing when any irritant enters the nose
What is meant by receptors and effectors? Give two examples of each.
Explain the mechanism of reflex action with the help of a suitable diagram.
What type of reflex is the following?
Knitting and swimming
Mention, if the following statement is True or False
A reflex action is a spontaneous response to a stimulus.
Reflex arc allows the rapid response of the body to a stimulus.
Which of the following is not involved in Knee-jerk reflex?
Categorise the following under stimulus and response.
Pain in the eye if something falls into it.
Given alongside is a partial diagrammatic representation of a certain phenomenon pertaining to the nervous system.
 |
- Name the parts numbered 1-7.
- Name the phenomenon that the diagram depicts and define it.
- Give the technical term for the point of contact between two nerve cells.
- Name the parts not shown in the diagram that should be included to complete the pathway of the phenomenon.
