What prevents the body from absorbing excess zinc?Multiple choice question.Protein carriersCell membranesMucosal blockPancreatic enzymes
Question
What prevents the body from absorbing excess zinc?Multiple choice question.Protein carriersCell membranesMucosal blockPancreatic enzymes
Solution
The body regulates the absorption of zinc primarily through a mechanism in the small intestine known as the mucosal block. This mechanism prevents the absorption of excess zinc. When high amounts of zinc are consumed, the cells in the small intestine produce a protein called metallothionein. This protein binds with zinc and keeps it trapped within the cells of the intestine, preventing it from being absorbed into the body. Therefore, the correct answer is "Mucosal block".
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