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) This large circulating plasma protein is the precursor of angiotensin I:
(2) In response to a decrease in blood volume and/or blood pressure, the juxtaglomerular cells of kidney tubules release this hormone/enzyme into the bloodstream:
(3) These steroid hormones are thought to be responsible for the development of secondary sexual characteristics:
(4) Parathyroid hormone is released by __________ cells of the parathyroid glands.
(5) This hormone is the major secretory product of the zona glomerulosa of the adrenal cortex:
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Posted: Tuesday, August 25, 2015
Last updated: Tuesday, March 11, 2025
Last updated: Tuesday, March 11, 2025
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