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meigan_2009
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Oxytocin (OT)
- Released by the posterior lobe of the pituitary gland
- In response to GnRH.
- OT increases contractions of the uterus.
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Antidiuretic Hormone (ADH)
- Released by the posterior lobe of the pituitary gland.
- In response to increased blood osmolarity.
- Acts on the kidneys to increase water retention.
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Follicle Stimulating Hormone (FSH)
- Secreted by the anterior lobe of the pituitary gland.
- In response to GnRH.
- Targets the ovaries (regulate egg development)
- Targets the testes (regulate sperm production)
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Luteinizing Hormone (LH)
- Secreted by the anterior lobe of the pituitary gland.
- In response to GnRH.
- Stimulates corpus callosum (ovaries).
- Regulates secretion of testosterone (testes).
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Adrenocorticotropic Hormone (ACTH)
- Secreted by the anterior lobe of the pituitary gland.
- In response to corticotrophin releasing hormone (CRH).
- Stimulates the cortex of the adrenal to inc. secretion.
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Thyroid Stimulating Hormone (TSH)
- Secreted by the anterior lobe of the pituitary gland
- In response to thyroid releasing hormone (TRH)
- Stimulates thyroid gland to increase release of hormones.
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Prolactin (PRL)
- Secreted by the anterios lobe of the pituitary gland.
- In response to prolactin releasing hormone (PRF).
- Stimulates milk production (mammary gland).
- Enhances testosterone production.
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Growth Hormone (GH)
-somatotropin-
- Secreted by the anterior lobe of the pituitary gland.
- In response to growth hormone releasing hormone (GHRH).
- Promotes tissue growth of most body tissues.
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Thymopioetin & Thymosin
- Secreted by the thyroid gland.
- Regulate the development and activation of the immune system.
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Triiodothyronine (T3) & Tetraiodothyronine (T4)
- Secreted by the thyroid gland.
- Increase metabolic rate of target cells.
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Calcitonin
- Secreted by parafollicular cells. (between thyroid follicles)
- Decreases blood calcium levels.
- Activates osteoblast to remove calcium from blood for bone.
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Parathyroid Hormone (PTH)
- Secreted by the parathyroid glands.
- Increases blood calcium levels.
- Activates osteoclasts break down bone for calcium.
- Increases calcium absorption in digestive system.
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E/NE & ACTH
- E/NE- stimulates adrenal medulla to release hormones.
- ACTH- stimulates adrenal cortex to release hormones.
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Mineralocorticoids
- Includes aldosterone.
- From zona glomerulosa.
- Targets kidneys (increased sodium retention) which regulates other electrolytes in blood.
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Glucocorticoids
- Includes Cortisol.
- In zona fasciculata
- In response to ACTH.
- Fights stress by inc. blood glucose levels & dec. inflammation.
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Gonadocorticoids
- Sex steroids (Androgens & Estrogens)
- Responsible for female sex drive, pubic & axillary hair growth.
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Glucagon
- Secreted by alpha cells of Islet of Langerhans.
- In response to low blood glucose levels.
- Inc. blood glucose by releasing glucose from glycogen.
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Insulin
- Secreted by beta cells of Islet of Langerhans.
- In response to inc. blood glucose levels.
- Binds to target cell membrane receptors to allow glucose to enter.
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Somatostatin
- Secreted by delta cells of Islets of Langerhans.
- Modulates the secretion of insulin and glucagon.
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Prostaglandins
- Secreted by most organs.
- Coordinate tissue activity.
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