Question

How are involuntary actions and reflex actions different?

Answer 1

Involuntary action:

1. Involuntary action is the set of muscle movements that do not require thinking.
2. But it is controlled by the brain for example beating the heartbeat.
3. Actions that take place without the willingness of an individual are called involuntary actions.
4. Example: Digestion, sneezing, heart beating, etc.
5. Involuntary and voluntary actions are controlled by the same part of the brain.

Reflex action:

1. Reflex action is rapid and spontaneous action in response to any stimulus which doesn’t involve the brain.
2. Reflex action is a sudden, involuntary response to stimuli.
3. It helps organisms to quickly adapt to adverse circumstances that could have the potential to cause bodily harm or even death.
4. Example – Shutting their eyes immediately when bright light is focused on them and pulling our hands away immediately after touching a hot or cold object.

Difference between involuntary action and reflex action:

Following is the table which is a quick summary of the difference between involuntary action and reflex action:

Involuntary actions	Reflex actions
Involuntary actions take place without the conscious choice of an organism.	Reflex actions are those actions that take place along with stimuli.
These actions are controlled by the medulla oblongata or the midbrain.	These actions are controlled by the spinal cord.
The speed is relatively slower.	The speed is very quick.
Example: Beating of heart	Example: Blinking of eyes.