ANP 1105 Lecture Notes - Lecture 10: Parathyroid Gland, Cyclic Adenosine Monophosphate, Thyroid

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Joanne Savory

Document Summary

Anp1105 a dr. joanne savory and dr. m zeroual. Autocrine: chemicals effect same cells that secrete them. Paracrine: effect local cells of same tissue. Hormone producing tissues: hypothalamus, thyroid gland, parathyroid, pancreas, adrenal gland, etc. Hormones: chemical substance released into the extracellular fluids that regulate metabolic function of other cells in the body. Involved in reproduction, growth and development, maintenance of electrolyte/water/nutrient balance of the food, regulate cellular metabolism and energy balance, and mobilize body defenses. Target cell specificity of hormones hormones must bind to specific receptors to influence target cell fn. Number of receptors for that hormone on the target cell (receptor content) Affinity (strength) of the binding between hormone and receptor. Mechanism of hormone action hormones alter levels of cell activity; increase or decrease rate of normal cellular processes: Alter plasma membrane permeability or membrane potential by opening or closing ion channels. Stimulate synthesis of enzymes or other proteins in cells. Stimulates mitosis more production of tissue.