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Atrial volume receptors are low pressure baroreceptors that are found in the atria of the heart and pulmonary arteries. When these receptors detect a blood volume increase in the atria, which indicates an increase in the arterial pressure, a signal is transmitted from the receptors to the hypothalamus in the brain. The hypothalamus, in turn, decreases the production of vasopressin (ADH, AVP, or arginine vasopressin). These receptors also cause a renal vasodilation, resulting in increase of the water amount in the glomerular filtrate which, combined with the decresed production of vasopressin by the hipothalamus, will cause a massive water loss through urine (increase in the urinary debit). That water loss decreases the blood volume, resulting in the decrease of its pressure. ==See also== * Atrial natriuretic peptide * Angiotensin * Bainbridge_reflex * Aldosterone 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Atrial volume receptors」の詳細全文を読む スポンサード リンク
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