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18 December, 02:32

Consider the following examples of homeostatic regulation: In response to an increase in plasma K concentrations, secretion of the hormone aldosterone increases and mechanisms that bring K levels back to normal are initiated. In response to a decrease in plasma Ca2 concentrations, secretion of parathyroid hormone increases and mechanisms that bring Ca2 levels back to normal are initiated. Which of the statements below is true:

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  1. 18 December, 06:11
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    Both are examples of negative feedback regulation.

    Explanation:

    The maintenance of the homeostasis in the body is controlled by the the feedback regulation of the body. Two main types of feedback regulation are positive regulation and negative regulation.

    The negative regulation occurs when the final product of the reactions inhibits the further secretion of that product. In the given examples of aldosterone and calcium mechanism, the secretion of aldosterone and calcium decreases as the normal levels are acheived in the body.

    Thus, the answer is both are examples of negative feedback regulation.
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