Karnataka Secondary Education Examination BoardKarnataka SSLC
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Human Brain - Involuntary Action

notes

HUMAN BRAIN:-

Involuntary actions:-

Actions that donot require thinking and occour without the concious choice of an organism are known as involuntary actions.

Reflex actions are a part of involuntary action as these actions occur rapidly as a responce to the external stimulus and are known as reflex involuntary actions.

  • Simple reflex actions like change in the size of the pupil, and the thought out actions such as moving a chair, there is another set of muscle movements over which we do not have any thinking control.
  • Many of these involuntary actions are controlled by the mid-brain and hind-brain.
  • All the involuntary actions including blood pressure, salivation and vomiting are controlled by the medulla in the hind-brain. 
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Control & Co-ordination part 17 (Human Brain: CNS, Structure & parts) [00:16:48]
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