BIO 211 Lecture 8: Unit H: Endocrine System
Document Summary
Unit h: endocrine system: hormones and glands in general, hormones and chemical messengers, chemical messenger released from one cell to regulate another, physiological classes of chemical messengers and regulators. Intracellular camp, ca2+, ip3 (inositol triphosphate: neurotransmitter ach, ne, serotonin, neuromodulator ne, neuropeptides, neurohormones adh (made by hypothalamus), ot, glandular hormones insulin. Pheromones - bombykol: regulatory systems- 2 (ns and es, glands, endocrine glands- secrete product into blood stream. Pineal: several structures have endocrine function, hypothalamus. Pancreas: exocrine (90%) and endocrine (1%, gonads. Placenta: hormone activity: receptors, protein or glycoprotein, hormone receptor specificity determines target. If cell has receptor for hormone, it will stick. Inactivated and destroyed in liver: local- inactivated quickly, target neighbor cell or self. Autocrine- self-cell target: physiological classes of hormones, kinetic. Epi and oxytocin cause muscle contractions: metabolic. T3/t4, insulin, human growth hormones, glucagons, glucocorticoids: regulate biochemical reactions, behavioral, regulate reproduction, development of ns.
