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Endocrinology%20Figs%20BW - Endocrinology A. Introduction...

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Endocrinology A. Introduction B. Mechanisms of Hormone Action C. Posterior Pituitary D. Anterior Pituitary 1. Overview 2. Tropic Hormones 3. Non-Tropic Hormones E. Calcium & Glucose
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Gap Junctional Coupling Presynaptic Neuron Postsynaptic Cell Endocrine Autocrine Paracrine Contact Dependent Synaptic Transmission BLOOD VESSEL soma terminal Cell in Another Individual Pheromone Hormones Are One Type of Chemical Signal
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vs. Hydrophilic Hormones Peptides Proteins Amines Lipophilic Hormones Steroids Thyroid Hydrophilic Hormone Nuclear receptor DNA Intracellular Second Messengers Lipophilic Hormone Cytoplasmic receptor Plasma Membrane Receptors Carrier Protein RESPONSE Altered Enzymes, Channels, or Gene Expression RESPONSE + Mechanisms of Hormone Action
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Hormones of the Posterior Pituitary Water retention Milk ejection, Labor contractions (Neurohypophysis) (Adeno- hypophysis) ADH / AVP* *AVP = Arginine Vasopressin
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Role of Oxytocin in Milk Ejection Mary Cassatt (1845-1926) Maternité, 1890 A B C D E A. Breast- feeding B. Stimulation of nipple mechanoreceptors C. Oxytocin release D. Muscle contraction in mammary glands and ducts E. Milk ejection + + + + +
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Endocrinology%20Figs%20BW - Endocrinology A. Introduction...

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