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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.
What are multiple alleles? Is there dominance in multiple alleles? Multiple alleles is the phenomenon in which the similar gene has more than two dissimilar alleles (in normal
Describe pulsus parvus et tardus? Pulsus parvus et tardus means a slow rising small volume pulse typically in severe aortic stenosis with preserved LV function. Figur
diffrentiate between javaman and peckingman
What is the cytoskeleton, and what are three of its main components? The cytoskeleton is a network of long protein strands located in the cytosol. Three main components are
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How is the genetic determination of sex established in humans? In the diploid genome of the human beings, there are 46 chromosomes, 44 of them are autosomes and two are sex chr
Define Factors Affecting Microbial Survival and Growth? Microbes commonly present on the food, we have seen, include members of the genera Bacillus, Clostridium, Pseudomonas, S
Which of the following is true for the ATP-sensitive potassium channel? A. The channel is a spanning protein with a receptor site for ATP located on an extracellular region of
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