Endocrine System

Endocrine System - Nervous – endocrine connection • Releasing and inhibiting hormones • Hormones produced/stored posterior pituitary gland

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HORMONES! (Endocrine System)
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How cells communicate 1. diffusion- neurotransmitters 2. Hormones- local hormones/ paracrine= same tissue 3. Direct (Gap Junctions)- heart cells Comparing Exocrine and Endocrine Exocrine- releases product into duct/ tube, extracellular effects (pancreas). Endocrine- releases tissue fluid and circulatory system, intracellular effects (thyroid hormones).
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Interactions 1. Synergist (production of sperm) 2. Permissive- give another permission to function estrogen- uterus- receptors- for progesterone- glycogen- glucose 1. Antagonistic Effects- Result from Target Cell Alter Metabolism T3, T4 Change mitosis rate Synthesis of new molecule Cell to take in substance Cell to release substance
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Function- maintain homeostasis Mechanism of action Hormone types Steroid hormones- based on cholesterol- lipid based as well. Sex- testosterone, estrogen Non-steroid hormones- outside the call, talk to receptors Activates second messenger Characteristics
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Hypothalamus Homeostasis
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Unformatted text preview: Nervous – endocrine connection • Releasing and inhibiting hormones • Hormones produced/stored posterior pituitary gland Posterior Pituitary Gland • Antidiuretic hormone • Oxytocin Anterior Pituitary Gland • Growth hormone • Prolactin • Tropic hormones – Thyroid stimulating hormone (TSH) – Adrenocorticotropic hormone (ACTH) – Follicle stimulating hormone (FSH) – Luteinizing hormone (LH) Thyroid and Parathyroid Glands • Thyroid gland – Thyroxine and triiodothyronine – Calcitonin • Parathyroid gland – PTH (parathyroid hormone) Adrenal glands • Adrenal medulla – composed of nervous tissue – Epinephrine – Norepinephrine • Adrenal cortex – Cortisol – Aldosterone Pancreas • Exocrine function – Enzymes • Endocrine function – Insulin – Glucagon Other Endocrine Glands • Pineal gland – Melatonin • Thymus gland – Thymosin • Stomach and intestines – Gastrin, secretin and cholecystokinin...
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This note was uploaded on 09/14/2011 for the course BIO 227 taught by Professor Lonsdale during the Fall '10 term at Boise State.

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Endocrine System - Nervous – endocrine connection • Releasing and inhibiting hormones • Hormones produced/stored posterior pituitary gland

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