Practice Physiology questions with answers and explanations.
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Aldosterone is a mineralocorticoid that increases renal sodium reabsorption and potassium secretion.
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Countercurrent multiplier is a loop-of-Henle mechanism that establishes the medullary osmotic gradient for urine concentration.
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Baroreceptor reflex is a rapid autonomic response that buffers short-term changes in arterial blood pressure.
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Action potential refractory period is a period that limits immediate re-excitation of an excitable membrane after depolarisation.
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Parathyroid hormone is a hormone that raises plasma calcium through bone, kidney and vitamin-D related effects.
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Gastrin is a gastrointestinal hormone that stimulates gastric acid secretion and mucosal growth.
