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.
(1) Which of the following hormones (chemical messenger molecules) is/are vasoactive?
(2) The kidneys are the target tissues of the following hormone(s).
(3) At physiologically relevant concentrations, glucocorticoids are capable of binding to both glucocorticoid and mineralocorticoids intracellular receptors and, similarly, mineralocorticoids are capable of binding to both mineralocorticoid and glucocorticoid intracellular receptors.
(4) During human pregnancy, high levels of human chorionic gonadotropin (HCG) lead to:
(5) During human pregnancy, high blood levels of the human chorionic gonadotropin (HCG) make it possible for HCG to cross-react with the following receptor: