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प्रश्न
What is the difference between a voluntary and an involuntary action? Which kind of action is digestion? Explain your choice.
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उत्तर
| Voluntary action | Involuntary action |
| A voluntary action is under the control of one's will. | An involuntary action is not under the control of one's will. |
Digestion is an involuntary action as it occurs inside our body without our conscious choice.
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संबंधित प्रश्न
Which part of the brain maintains posture and equilibrium of the body?
How are involuntary actions and reflex actions different from each other?
Briefly explain the following terms : Reflex action
The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the questions:

1) Name the phenomenon that is depicted in the diagram. Define the phenomenon.
2) Give the technical term for the point of contact between the two nerve cells.
3) Name the parts numbered 1, 2 and 3.
4) How does the arrangement of neurons in the spinal cord differ from that of the brain?
5) Mention two ways by which the spinal cord is protected in our body.
State one function each of cerebellum and pons.
Name two parts of the body which contain receptors of chemical stimuli.
What is a reflex action? Explain with the help of an example.
Which of the following is not an involuntary action?
(a) vomiting
(b) chewing
(c) heart beat
(d) salivation
Which of the following statements are true?
(i) sudden action in response to something in the environment is called reflex action
(ii) sensory neurons carry electrical signals from spinal cord to muscles in a reflex action
(iii) motor neurons carry signals from receptors to spinal cord in a reflex action
(iv) the pathway of transmitting signals from a receptor to a muscle is a reflex action
Differentiate between the following pair of terms:
Stimulus and impulse
State whether the following is simple reflex, conditioned reflex or neither of the two:
Blushing: ……………….
What is a reflex action?
State whether the following is simple reflex, conditioned reflex or neither of the two.
Knitting without looking
State whether the following is
Blinking
State whether the following is
Cleaning
State whether the following is
Playing on the Keyboard
What type of reflex is the following?
Formation of goose-pimples in cold weather.
Complete the following sentence with appropriate Word
Which of the following is not a natural reflex action?
In reflex action, the reflex arc is formed by ______
If after cutting through dorsal root of a spinal nerve of a mammal, the associated receptor in skin was stimulated the animal would ______.
