Is epithelium vascularized
Is epithelium vascularized? How do oxygen and nutrients reach the epithelium? Why is this characteristic an important evolutionary acquisition?
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Epithelia are not vascularized (that is, capillaries do not directly accomplish their cells). The epithelium exchanges substances through diffusion with the connective tissue located under it. Since the epithelia are not vascularized minuscule skin wounds or scratches which take place all the time do not trigger bleeding and do not expose the blood to contamination from exterior agents. This is a significant protective strategy introduced by evolution.
Temporary groups with deadlines do not seem to follow the previous model. Studies indicate that they have their own unique sequencing of action (or inaction): I. Their first meeting sets the group's direction. II.&n
Name several features of a secondary immune response which differentiate it from primary immune response?
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Write down the generic function of leukocytes? And also give brief description of leukocytosis and leukopenia?
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