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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.
The urea cycle which is also known as the ornithine cycle is a cycle of biochemical reactions occurring in several animals which produces urea ((NH2)2CO) from ammonia NH3. That cyc
Q. What are the allosteric enzymes? Allosteric enzymes are those that have in excess of one activation center and to which other substances, called allosteric regulators, bind.
Species diversity An important attribute of a community is its species diversity. The diversity is calculated both by the number of species (richness) and the relative abundanc
what are the two main classes into which fish are divided
Q. How do populations of predators and prey vary in predatism? Whenever a predator population enhance at the first moment the prey population tends to reduce. At a second momen
If a large volume of fluid has shifted from the blood into the peritoneal cavity, how would this affect blood volume and hematocrit?
Hepatitis A Hepatitis A vaccine (Havrix - GlaxoSmithKline; Vaqta Merck) is recommended for all susceptible travelers going anywhere other than Canada, Australia, New Zealand,
Explain Control of Oedema in Nutritional Care? Low levels of circulating proteins lead to oedema due to loss of colloidal osmotic pressure to maintain the normal fluid shift me
Heart Heart is a cone shaped muscular structure situated between two lungs in the thoracic cavity. It is covered by a sac like structure known as pericardium which has two lay
What is the difference among smooth and rough endoplasmic reticulum? Ans) The endoplasmic reticulum is a fine membranous structure contiguous to the nuclear membrane and p
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