Week 9 Bio: Endocrine system
Week 9 Bio: Endocrine system BIO 151-001
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This 2 page Class Notes was uploaded by Regan McGillick on Saturday April 2, 2016. The Class Notes belongs to BIO 151-001 at University of Wisconsin - Eau Claire taught by Kelly L. Murray/ Kelly Jo Wright in Spring 2016. Since its upload, it has received 12 views. For similar materials see Biology of Humans in Biology at University of Wisconsin - Eau Claire.
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Date Created: 04/02/16
Week 9 Bio Lecture notes: (3/28. 3/30, 4/1) what to know about the Endocrine hormones? 1) What is each hormones target tissue? (receptors elicit a response) 2) What is its source? 3) What is causing the hormone to come rom it’s source organ? (stimulus) 4) And what is the response of the target organ when the hormone reaches it? The endocrine system and the nervous system (like most systems) work together- communicating the stimuli and responses. o While the endocrine system is SLOWER – its LONG LASTING o The nervous system is FASTER and SHORT Hormones all have same principles: growth, development, tissue activity, reproduction how do hormones/ systems work/initiate? --the anterior pituitary gland send stimuli that causes endocrine tissue to release needed hormones into blood stream to the target organ. That target organ needs the right receptors in order to receive the needed hormone—turns something on or off, speeds up or slows down. Order of Hormone Glands: 1) Pituitary Gland: a. Anterior pituitary: tropic hormones i. Follicle stimulating hormone ii. Luteinizing hormone iii. Prolactin hormone iv. Adrenocortropic hormone v. Thyroid stimulating hormone b. Posterior pituitary: just store hormones i. Antidiuretic hormone – kidney function ii. Oxytocin 2) Adrenal Glands: stimulate the adrenal glands a. Adrenal Cortex – outer layer i. Glucocorticoids ii. Aldosterone iii. Sex hormones b. Adrenal Medulla – central region – stimulated by sympathetic system i. Epinephrine ii. Norepinephrine 3) Thyroid Gland a. Thyroxin b. Calcitonin 4) Parathyroid Gland a. Parathyroid 5) Thymus Gland a. 2 lymphocyte maturing hormones 6) Pineal Gland a. Melatonin Disorders of the Endocrine system: a. Can have hormone mimics that take the place of other hormones b. Interfere with the other hormones- attach to receptors of the target organ c. Preventing the natural and normal hormone from creating response in target organ d. Can create harmful or even toxic chemical in your body, or even in food. “Body Load” – the measurable concentrations of chemicals in your body o Ex: BPA, DDT
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