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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.
What are all teh parts of a simple ciliated columnar epithilial cell?
Determine the function of human body system Human body has different systems to perform different functions. A system consists of organs to perform a particular set of function
Q. What is the kinds of asexual reproduction that occurs in hydras? Hydras reproduce asexually by budding.
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How to improve natural history of adults with congenital heart disease? Improving the natural history of adults with CHD: As mentioned above the populations of adults with CH
Tetanus This is an infectious, non-febrile disease of animals and man, and is characterised by spasmodic tetany and hyperaesthesia. The causative agent is Clostridium tetani,
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Calcium antagonists are not recommended for the treatment of CHF because of their negative inotropic effects. However, second-generation dihydropyridine-type calcium antagonists su
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Subdivisions of Ecology Ecology was earlier divided into plant and animal ecology. However, modem ecology does not make any such distinction since plants and animals are intima
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