Endocrine part I

Endocrine part I - Principles of Endocrine Control...

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Principles of Endocrine Control Mechanisms NURS 216 Spring 2010 Sabra H. Smith, MS, RN
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Anatomy and Physiology Location of the endocrine glands Hormones produced by the endocrine glands chemical messengers secreted by endocrine glands and carried in body fluids to act on specific tissues, paracrine and autocrine Target cell/organ Hormone action (physiologic effects)
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Anatomy and Physiology Hypothalamus Anterior pituitary Posterior pituitary Thyroid gland Parathyroid gland Pancreas Adrenal cortex Adrenal medulla Ovaries Testes
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The Endocrine System Network of ductless glands Secretes hormones directly into the blood stream Affects the function of a target organ or tissue Closely connected to the central nervous system
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Functions of the Endocrine System Response to stress or injury Growth and development Reproduction Fluid and electrolyte balance Metabolism
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Hormones Chemicals which cause changes in a target organ Secreted in very low concentrations Four structural classes: -amines/amino acids -polypeptides -steroids -fatty acids
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Hormones can travel freely through blood
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Endocrine part I - Principles of Endocrine Control...

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