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Is the epithelium vascularized? How do nutrients and oxygen reach the epithelium? Why is this feature a significant evolutionary acquisition?
Epithelia are not vascularized (capillaries do not directly reach their cells). The epithelium exchanges substances by dispersal with the connective tissue situated under it.
As the epithelia are not vascularized minuscule skin injuries or scratches that occur all the time do not trigger bleeding and do not expose the blood to contamination from external agents. This is an significant protective method discovered by evolution.
Explain about the Chromium Metabolism? Chromium appears to be absorbed throughout the small intestine, with absorption being higher in jejunum. The mechanism of absorption has
REFLE X ACTION - Marshel Hall discovered reflex action. Best & Taylor defined it. Reflex action is functional unit of CNS. It is sudden, immediate involuntary acti
Neonatal hypoglycaemia Hypoglycaemia is a metabolic condition of newborn piglets that develops in first few days of life due to decreased caloric intake and increased cataboli
Patients with heart failure have a high incidence of both symptomatic and asymptomatic arrhythmias. About 10 per cent of patients have syncope or presyncope resulting from ventr
what are the role of microbes in human welfare
how many grams of table sugar would you need to dissolved in water to produce 0.75 liters of a 0:25 molar acqeous solution of table sugar?
Why is not Mendel's second law always valid for two or more phenotypical traits of an individual? Mendel's second law, or the law of the independent assortment, is valid for g
feeding habit of branchiostoma?
explanation of examples of protozoa
Special type of Wards: Additional accommodation or differences in size and shape of some of the special type of wards e.g. Intensive Care Ward, Infectious diseases ward and
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