Endocrinology is defined as the study of how chemical messenger molecules, referred to as hormones, influence physiological processes. By definition, a hormone is a signaling molecule that is released into the bloodstream, where the hormone can then travel to distant target cells and tissues within the body. Along with the nervous system, the hormones of the endocrine system provide an important means by which information travels within the body. Test your basic knowledge of the endocrine system by taking this simple quiz.
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(1) Aldosterone increases Na+ secretion into the lumen of kidney tubules.
(2) Aldosterone increases K+ reabsorption from the lumen of kidney tubules.
(3) Aldosterone increases K+ secretion into the lumen of kidney tubules.
(4) Aldosterone increases water (H2O) reabsorption from the lumen of kidney tubules.
(5) Aldosterone increases water (H2O) secretion into the lumen of kidney tubules.
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Posted: Monday, February 22, 2016
Last updated: Tuesday, March 11, 2025
Last updated: Tuesday, March 11, 2025
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