Physiology 1021 Lecture Notes - Lecture 3: Posterior Pituitary, Anterior Pituitary, Cell Membrane
29 Nov 2016
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Document Summary
Chemical signal in the nervous system signals travel in the synapse communication is extremely rapid. Hormones: chemical signal in the endocrine system. Use carrier proteins to travel the blood stream. Fast (changes to existing) slow (creation of new) Pituitary gland site where several hormones are released which control reproduction, metabolism, body fluid volume, growth etc. Infundibulum bridge like conducts the hypothalamus and pituitary gland. Anterior pituitary gland contains endocrine cells: releases numerous hormones in response to stimulation from the hypothalamus. Posterior pituitary gland made up of neurons (size of a pea) releases two peptide hormones (from axon terminals: oxytocin promotes uterine contractions and milk excretion, vasopressin (aka. Antidiuretic hormone adh) acts on specific regions of the kidney tubules to conserve water by allowing reabsorption of water back into the blood (affects our blood pressure; hydrophilic; found on the plasma membrane) Hypothalamus releases (made in neurons and released in the brain):
