Involuntary action – Involuntary action is the set of muscle movements that do not require thinking. But it is controlled by the brain for example beating the heartbeat.
Reflex action – Reflex action is rapid and spontaneous action in response to any stimulus which doesn’t involve the brain. For example – shutting eyes immediately when bright light is focused on them.
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.|