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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.
Non-Ketotic Hyperosmolar Diabetic Coma (NKHDC) is another acute complication of diabetes mellitus. In this condition, the coma (loss of consciousness) is developed due to high blo
Types of survivorship curves
Spinal cord Spinal cord is a long and cylindrical structure. It passes through the vertebral column extending all along the dorsal surface of trunk. Vertebrae of the v
genus of amoeba
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Classification: There were many similarities between things or phenomena which led to their classification. The first classifications were in terms of beings (the living), th
What is Optic Chiasma This structure makes upto portion of the anterior inferior floor of the third ventricle. It is shaped like a flat oblong bridge and connects the optic ne
Vertical Stratification - Tropical Rain Forest In a tropical rain forest, vertical stratification is very clearly seen. In addition to the different layers described above, th
What types of individuals in a population are represented by the two ends of a bell curve?
What type of athlete would have a above average reaction time please explain.
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