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Regulation of Respiration-Nervous and Chemical Control

March 24, 2011  by: krishnaverma  Points: 8   Category: General Science  Earning $0.10   Views: 1661

In this resource I will explain the regulation of respiration in detail. The regulation of respiration consists of nervous and chemical control.

         

Respiration occurs in a normal adult at the rate of 14-18 per minute. This respiratory rate is more in case of children. Moreover respiratory rate also gets altered in case of occurrence of diseases. The regulation of respiration is a very vital process and occurs by

1)Nervous Control: It consists of two mechanisms, first mechanism keeps voluntary control in check and the other one is responsible for automatic control. Voluntary control is found in the cerebral cortex and is involved in sending impulses to the respiratory motor neurons via the corticospinal tracts. On the contrary , the center for the automatic control is found in the pons and medulla

As we know that respiration contimues on its own and does not stop even in unconscious state. Thus even if the parts of the brain above pons are removed respiration will continue.
Moreover Pneumotaxic center and Apneustic center located at pons are also involved in the regulation of respiration. Medullary respiratory center present bilaterally is also involved in this regulation.

The activity of apneustic center is affected by the afferents from the lungs and pneumotaxic centre which again affect the inspiratory center.


2)Chemical Control: The three factors responsible for the chemical control of respiration are:
i)Carbon dioxide;
ii)Oxygen; and
iii)pH (Hydrogen ion concentration).




Comment(s)
Author: Dr. Simran Kaur        
Posted Date: 03/30/2011    Points:1    

Well written and to the point article on the respiratory regulation. Well written article krishnaverma.

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