BIOM 4030 Study Guide - Midterm Guide: Endocrine Gland, Extracellular Fluid, Intracrine
9 Feb 2017
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Stable internal environment (extracellular fluid and blood) Multiple levels of organization (cellular organ systems) Organ systems allow chemicals in and out to restore internal balance. Gi tract absorbs nutrients & water, excretes waste. Heat generated by metabolism lost thru skin & mucus membranes; can also be absorbed. Control center: determines set point, analyzes info, determines response. *be able to identify sensor, integrator, and effector in all examples. Feeds back to shut off effector response. Neurohormones: produced by neurons, released into blood by neuro-secretory cells. Endocrine tissues are innervated (required for function) Study of the body & how it functions. Study of hormones, their actions, how they regulate physiology & behaviour. Endocrine gland: tissue that secretes substance into blood that influences target. Regulatory molecules secreted into extracellular fluid by endocrine cells. Exert effects on target cells via receptors. Mrna (nucleus & ribosomes) pre-hormone (rer) pro-hormone (golgi) hormone storage in secretory vesicles ca2+ exocytosis.
