Explain process to control of breathing, Biology

Assignment Help:

Explain process to Control of Breathing?

The rate of breathing is controlled by the medulla, the segment of brain stem just above the spinal cord. If the brain stem is cut just above the medulla, the basic breathing mechanism is left intact. The level of oxygen, or pO2 , provides little feedback information, but excessive carbon dioxide in the air causes breathing to become deeper and more rapid, even in the presence of excess oxygen. In extreme situations of oxygen depletion, chemosensors located on the large blood vessels leading to the heart, the aorta, and carotid arteries send impulses to the respiratory centers, causing an increase in respiratory rate.

Muscle cells have another oxygen-carrying molecule called myoglobin, which consists of only one polypeptide chain with an iron-containing structure that binds one molecule of oxygen. This molecule serves as a reserve for periods of high oxygen demand in certain muscles. The energy required for the body to maintain life processes while at rest is called the basal metabolic rate, or BMR.

 


Related Discussions:- Explain process to control of breathing

Explain the taxonomy of lamarck, Explain the taxonomy of Lamarck? Lamar...

Explain the taxonomy of Lamarck? Lamarck's taxonomy was mainly static in nature and his classification does not show its true value to the development of modern taxonomy. His m

In which environments do bacteria live, In which environments do bacteria l...

In which environments do bacteria live? Bacteria can be found in various environments throughout the planet. There are bacteria in the air, in fresh water, on the surface, in t

Describe coronary spasm, Q. Describe Coronary Spasm? Usually spasm deve...

Q. Describe Coronary Spasm? Usually spasm develops at the site of subcritical or critical stenoses, but it may also occur in angiographically normal coronary arteries, the so c

Vector for cloning genes into higher organisms, Which one of the following ...

Which one of the following is used as vector for cloning genes into higher organisms ? 1. Baculovirus 2. Salmonella typhimurium 3. Rhizopus nigricans 4. Retrovirus

Emphysema, Emphysema Emphysema is destructive changes in alveolar wall...

Emphysema Emphysema is destructive changes in alveolar walls and enlargement of air spaces distal to the terminal non-respiratory bronchioles. It is characterized physiolog

Species and habitats, Can you give me an example of the species that crosse...

Can you give me an example of the species that crossed a few habitats?

What does radial symmetry means, Q. What does radial symmetry means? What i...

Q. What does radial symmetry means? What is the kind of symmetry found in chordates? Which are other phyla of the animal kingdom that present species with radial symmetry? Radi

Technical requirements for pulmonary angiography, Q. Technical Requirements...

Q. Technical Requirements for pulmonary angiography? Digital subtraction pulmonary angiography with selective pulmonary arterial injections is vastly superior to conventional c

What is the secondary structure of a protein, What is the secondary structu...

What is the secondary structure of a protein? The secondary protein structure is formed by the manner its amino acids interact by the intermolecular bond. These interactions ma

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