How are involuntary actions and reflex actions different from each other?
How are involuntary actions and reflex actions different from each other?
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Involuntary actions cannot be consciously controlled. For example, we cannot consciously control the movement of food in the alimentary canal or pumping of blood through heart. These actions are however directly under the control of the brain. On the other hand, the reflex actions such as closing of eyes immediately when bright light is focused show sudden response and do not involve any thinking. This means that unlike involuntary actions, the reflex actions are not under the control of brain.
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Difference between involuntary actions and reflex actions are as
| Involuntary actions | Reflex actions |
| 1. They involve autonomic nervous system.
2. They usually occur in response to internal stimuli. 3. They are connected with the functioning of internal body parts. 4. These are regulated by medulla (hind-brain). 5. The speed of response is slower. 6. Example: Beating of the heart muscle. |
They involve all parts of voluntary nervous system.
They operate against harmful stimuli which are generally external and may cause injury. They are connected with emergency. Reflex action is controlled by the spinal cord. The speed of response is very fast. Example: Removal oF hand with jerk someone touches a hot objectaccidently. |
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| Involuntary actions | Reflections |
|---|---|
| i) These are actions which are not controlled by our will. | There are sudden actions. |
| ii) These are controlled by medulla of our brain. | These are under the control of Mid brain and hind brain. |
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