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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.
Bronchial asthma: Bronchial asthma is characterised by bouts of dyspnoea as a result of temporary narrowing of bronchi due to bronchial spasm, mucosal edema and thick secret
Types of Ovules Anatropous This is the most common type of ovule in angiosperms in which the ovule undergoes curvature such that the micropylar end comes to lie parallel
Is the effect of genetic drift likely to be the same in pop 1 and pop 2? How are genetic drift and pop size related? when there is strong selection against the homozygous recessive
Vitamin A dry powder Vitamin A dry powder is used in the (manufacture of dry mixtures) for which the oily ester concentrates are unsuitable or undesirable. Mainly, they are inc
Leukotrienes and prostaglandins are produced only when the mast cell undergo degranulation and enzymatic break down of phospholipids in the plasma membrane. The effects formed b
List the two primary targets to assess the good sugar control 1) There are two primary targets to assess the effectiveness of the management plan on glycemic (sugar) controls.
what are the etiological agents of malaria
Explain the biomechanics of cantilevers The biomechanics of cantilevers need to be understood. It has been found that when a three unit prosthesis is supported by two implants
Domestication - Wildlife It means that man has taken under his direct care the living beings which are useful to him. Through extensive breeding programmes, he has modified th
The internal composition of the cell is maintained because the plasma membrane is selectively permeable to small molecules. A lot of biological molecules are unable to distribute b
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