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the small intestines function is for the reabsorption of nutrients into the blood. The small intestine has multiple structural adaptations in relation to its function, primarily the mucosa which is a laye...

An artery which principally supplies cells metabolism would contain more of the 'fuels' required such as oxygen and glucose. A vein typically carries blood containing the waste products of metabolism and ...

The double stranded DNA is first unzipped by an enzyme called helicase. Helicase separates the two strands of DNA, and creates the replication fork. Essentialy two single stranded DNA chains are created, ...

blood vessels narrow (vasoconstriction) reduces blood flow blood vessels are close to the surface of the skin less heat lost by radiation

In our bodies we have a host of cells that make up our immune system. The immune system itself can be divided into the innate and adaptive immune response. If we use an analogy, the innate immune system a...