The Four Surfaces of Epithelia

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All epithelia at some point will be bound to connective tissue. So you have the top surface that faces the external environment. Then there are the surfaces on the side, so the lateral surfaces. This is where it adjoins its neighbor. And then we have the underneath, which is the basal surface. Basal like basement.

One of the four tissue types of the body, epithelia lines and protects our organs from the external and internal environment. In this episode, Dr Matt & Dr Mike explain how the different shape and layers of epithelia tell you what function it performs (form = functions) and highlight examples in the body where you can find each type. They also explore cancer, metaplasia, dysplasia, and Dr Matt's mums skin cancer diagnosis and surgery.

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