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Q. Is the epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this feature an important evolutionary acquisition?
Epithelia are not vascularized capillaries don't directly reach their cells the epithelium exchanges substances by diffusion with the connective tissue situated under it.
Since the epithelia are not vascularized minuscule scratches or skin injuries that happen all the time do not trigger bleeding and do not expose the blood to contamination from external agents this is an important protective strategy discovered by evolution.
Evolutionary Implications of Natural Regulation Many changes in abundance can be attributed to changes in extrinsic factors such as weather, disease or predation. But some cha
What is light reaction? Light reactions are reactions, which are initiated by light (also photo-induced reactions). Usually, light energy is change into chemical energy.
Pathophysiology The blood clotting mechanism occurs in three phases each dependent on preceding I phase. Due to the inherited deficiency of factor VIII and or factor IX, the
Technique: Careful re-opening of sternum and release of steinum from the underlying adhesion is done. Femoral artery and vein are exposed for going on femoro fenioral bypass
Explain Rifamycins-Rifampin Rifamycins - Rifampin, like isoniazid, is potentially hepatotoxic, and gas- trointestinal disturbances, morbilliform rash and thrombocytopenic purpu
Thus, the objectives of the nutritional care process should include the following points: 1. Restoration of good nutritional status with dietary modifications and counseling.
Under which conditions do aerobic cells carry out fermentation? Some cells that as a rule get energy from aerobic cellular respiration can carry out fermentation when oxygen is
Once you have identified a few relevant mRNA species, you wish to more closely examine their messages by sequencing. You do not have the time to search the genome and isolate the D
E mb ryonic stem cells (ES): These are pleuripotent cells of early embryo (blastocyst) capable of giving rise to all differentiated cells, including germ line cells. Em
what is the arrangement of microtubules in the sperm
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