Final answer:
ANH is produced by cells in the heart in response to high blood volume to help reduce blood volume and pressure.
Explanation:
ANH (atrial natriuretic hormone), also known as atrial natriuretic peptide, is produced by cells in the atria of the heart. It is secreted in response to high blood volume, promoting loss of sodium and water from the kidneys and suppressing the production of hormones like ADH. Unlike ADH, which is produced by the hypothalamus and released by the posterior pituitary to increase water reabsorption, ANH helps reduce blood volume and pressure.
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