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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.
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Describe the Developmental Periods of coronary artery diseases? The development of coronary artery disease like many other diseases can be divided into the following periods:
Q. What are the main opportunistic diseases that can affect AIDS patients? Among the opportunistic diseases that affect HIV contaminated people during the AIDS stage some are:
Explain the Meaning of anthropometric measures Anthropometric Measures mean and its uses. The term Anthropometric refers comparative measurement relating to the body structure.
How does chewing food help to speed up digestion? Chewing reduces food to portions small sufficient to be swallowed and enhances the surface area of the food for digestive enzy
In a chemical reaction the free energy change (/\Go') is -40 jk/mol and the entropy factor T/\S is 15 kj/mol. the enthalpy change /\H for the reaction is a. 25 kj/mol b.-25 k
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Define Types of Root Canal Perforations According to size According to size: Small perforation: ( smaller than #20 endodontic instrument ) mechanical damage to tissue is
Define The Names of Some Immemorial Plants? From the time immemorial plants have been known by some name, they are common, vernacular or local names given by different persons.
Types of Cambium On the basis of the arrangement of the Fusiform cells as seen in tangential section, cambium is divided into: A) Storied/Stratified Cambium : The groups o
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