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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.
Toxoplasma cycles between its rodent and feline hosts,living out different phases of its existence in each. what is the scientific means about the cat and mouse.
Define about the Polyphenols? We now come to a group of compounds, which were until recently considered to adversely influence nutrient absorption or giving colour to foods e.g
Are mollusc metameric beings? Exclusively analyzing this feature could it be said that molluscs are evolutionarily proximal to nematodes or to annelids? In molluscs there is no
HARD Y - WEINBERG LAW - Proposed by G.H. Hardy and W. Weinberg in 1908 independently. The law states "the frequency of genes or alleles in a population remains constant
What is leaf cuticle? Leaf cuticle is a thin waxy layer made of waxes and cutin on the outer surface of the leaf epidermis. Its function is near control the cellular transpirat
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Explain the Structure and Functions of Kidney You would have got a clear idea as to where the kidneys are situated. Yes, the kidneys are located in the posterior part of the ab
what is the differnce between syndrome and symptom?
Q. Rigid fixation to evaluate osseointegration? Is a clinical term that means absence of observed mobility. Rigid fixation indicates the absence of clinical mobility of an impl
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