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) Another name for adrenocorticotropic hormone (ACTH) is __________.
(2) Hypothalamic factors/hormones that influence the activity of endocrine cells within the anterior pituitary gland, reach the anterior pituitary via:
(3) Before entering the general circulation, posterior pituitary hormones may reach the anterior pituitary via this vein:
(4) In a pregnant, lactating woman, physical stimulation of the nipple and areola regions of the breast by a nursing baby lead to the elevation of circulating oxytocin levels within:
(5) Prenatal growth of the human fetus critically depends on growth hormone (GH).