BIOL 1090 Study Guide - Final Guide: Pineal Gland, Systemic Lupus Erythematosus, Allergic Rhinitis
23 Oct 2016
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Endocrine: release hormones that diffuse into blood stream. Pituitary gland, thyroid gland, parathyroid gland, thymus, pancreas, ovaries, testes, heart and placenta. Regulate long term processes = growth, development and reproduction. Exocrine: relating to or denoting glands that secrete their products through ducts opening onto an epithelium rather than directly into the bloodstream. Positive vs. negative feedback loops in hormone signaling. Pancreas secretes more insulin in response to high levels of glucose in the blood. Stops secreting insulin when set point is reached. Pituitary gland releases oxytocin during birth, which stimulates the uterus to contract. Uterine contractions then stimulate more oxytocin, which stimulates more contractions. Central role of the hypothalamus and pituitary gland in hormone signaling. Hypothalamus: primary function is to maintain homeostasis (stability of the internal environment) in the body. Pituitary gland: stores hormones from the hypothalamus and releases them into the bloodstream.
