lecture_notes_36_(ta)_2

lecture_notes_36_(ta)_2 - Lecture 36: Principles of...

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Lecture 36: Principles of Endocrinology Reading: review chap 4 pgs 113-125; read chap 18, pgs 653-662 (5 th edition 667-681) Endocrinology Study of the control ( REGULATION ) of physiological processes by the system of cells, tissues, organs and glands that secrete hormones. Hormone Chemical produced by one cell which enters the bloodstream, is transported to a different body location, and then binds to a specific receptor on a target cell(s), altering function of the target. ( HORMONES CAN INDUCE CELLULAR CHANGE , DIVISION , AND DEATH ( APOPTOSIS ) ) Human body has two major control systems: Nervous system Endocrine system - rapid, short-acting signals - slower acting, longer lasting signal - precise, direct interconnections - diffuse, indirect connections (via blood) ( NEURONS CAN RELEASE NEUROHORMONES ’, AND ENDOCRINE HORMONES AFFECT ALL CELLS IN THE BODY , EVEN NEURONS ) Endocrine signaling ( Figure 18-4, 5 th edition only ): endocrine gland -> hormone -> receptor binding -> postreceptor events -> response General functions of endocrine system (1) Homesostasis - regulates composition and volume of ECF - controls energy production - controls digestive tract and organ function - induces adaptation to hostile environment ( COULD EVOKE SYMPATHETIC RESPONSE , OR CORTISOL SECRETION
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This note was uploaded on 05/02/2008 for the course NPB 101 taught by Professor Fuller,charles/goldberg,jack during the Winter '08 term at UC Davis.

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lecture_notes_36_(ta)_2 - Lecture 36: Principles of...

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