Regulation of respiration, Biology

Assignment Help:

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.


Related Discussions:- Regulation of respiration

How to explain the high level of radiation resistance, Deinococcus radiodur...

Deinococcus radiodurans is a bacterium that was isolated from cooling ponds in and around nuclear power plants. It is highly resistant to ionizing radiation. Propose a hypothesis t

Physiological adaptation of parasites for infectioness, physiological adapt...

physiological adaptation of parasites for infectiousness?

What are the major novelties presented by fishes, Q. What are the major fea...

Q. What are the major features of fishes associated to the habitat where they live? Fishes are all aquatic animals and thus they have a hydrodynamic elongated body appropriate

Cerebral palsy, Cerebral Palsy Cerebral palsy is a non-progressive neu...

Cerebral Palsy Cerebral palsy is a non-progressive neuromuscular disorder characterised by disorder of strength, muscle control, posture or movement due to brain injury, befor

Determine the fate of manganese which is absorbed, Determine the fate of ma...

Determine the fate of manganese which is absorbed? Let us now study the fate of Mn which is absorbed. After absorption, Mn is complexed with albumin and transported to the l

What are antibodies, Question 1 Write a short note on the following- ...

Question 1 Write a short note on the following- Theory of clonal selection Interferons Super antigens Helper T cells Auto immunity Active Immunization

Describe coping strategies, Patient and his family have to cope up with a ...

Patient and his family have to cope up with a critical situation when patient has complications and more so when a patient has to be admitted in a hospital and referred. Some patie

Vitamins and minerals requirement in diabetes, Q. Vitamins and minerals req...

Q. Vitamins and minerals requirement in diabetes? The recommendation of vitamins and minerals is the same as for general population. However, lower levels of magnesium are ass

Assessment of diastdlic function, Q. Assessment of Diastdlic Function? ...

Q. Assessment of Diastdlic Function? Myocardial ischemia Clters diastolic function of left ventricle. The earliest abnormality to appear with prolonged ischemia is delayed my

Science in the ancient world, Science in the ancient  world: We have e...

Science in the ancient  world: We have explained why we should study the history of science and what we mean by the history of science. We have seen what science is like in t

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd