Regulation of respiration, Biology

Regulation of Respiration

Whenever the need for oxygen in the body increases, ventilation of the respiratory organs also increases. In the same way whenever the level of oxygen in the medium falls, the ventilation must increase or the body should be able to extract more oxygen from the respired air or both these processes must take place. In lungs of warm-blooded animals i.e. birds and mammals the ventilation is regulated primarily by the amount of carbon dioxide in the lung air. If we add more carbon dioxide to the inhaled air, there is a rapid increase in ventilation, even if carbon dioxide content in inhaled air is increased to that found normally in the lungs (5%), respiratory ventilation volume increases several folds. In higher concentrations, carbon dioxide becomes dangerous. Oxygen on the other hand, has a much smaller effect on ventilation, if we reduce the oxygen concentration from 21% to 18.5% there is virtually no effect.

The rhythmic contractions of the diaphragm and of the intercostal muscles are controlled by a respiratory centre which is located in the area of the medulla - oblongata and pons of the brain. There are separate neurons for inspiration and expiration that work alternatively.

Posted Date: 1/15/2013 7:20:32 AM | Location : United States







Related Discussions:- Regulation of respiration, Assignment Help, Ask Question on Regulation of respiration, Get Answer, Expert's Help, Regulation of respiration Discussions

Write discussion on Regulation of respiration
Your posts are moderated
Related Questions
D uck septicemia (duck pasteurellosis/new duck disease) The disease is caused by Pasteruella anatipestifer (Syn. Riemerella anatipestifer ) that mostly affects growing duck

On living organism           Air pollution causes following effects on living organism: (a)   Effects on humans: 1.      Carbon monoxide reduces the oxygen carrying cap

Foscarnet  (Foscavir)  Foscarnet is an alternative to ganciclovir and valganciclovir for treatment of CMV infection. It is approved for use in CMV retinitis, including progress

What is a population? A population is a set of individuals of the similar species found in a given place in a given time.

A lk a l in e indigestion The disease occurs due to the consumption of excessive amount of protein rich concentrate or non protein nitrogenous substance like urea, and is

Explain the Protein Energy Malnutrition (PEM)? Protein Energy Malnutrition (PEM) is the deficiency of macronutrients or energy and protein in the diet and forms the most import

Angiotensin receptor blockers block the final common pathway and provide a means of complete blockade of the system. One of two subtypes of AII receptors, the AT1 receptor produ

Agro Industrial-Baling and cubing Bailing is one of the most common processes used for the conservation of green fodders and grasses in many developed countries and attempts ha

Explain Scope of Food Science and Technology as a Subject? Food science and technology has developed as a discipline to systematically organize and link various kinds of knowle