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Unit 2 Hormones
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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.
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.
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)
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).
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.
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.
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.
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.
Thymopioetin & Thymosin
Secreted by the thyroid gland.
Regulate the development and activation of the immune system.
Triiodothyronine (T3) & Tetraiodothyronine (T4)
Secreted by the thyroid gland.
Increase metabolic rate of target cells.
Calcitonin
Secreted by parafollicular cells. (between thyroid follicles)
Decreases blood calcium levels.
Activates osteoblast to remove calcium from blood for bone.
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.
E/NE & ACTH
E/NE- stimulates adrenal medulla to release hormones.
ACTH- stimulates adrenal cortex to release hormones.
Mineralocorticoids
Includes aldosterone.
From zona glomerulosa.
Targets kidneys (increased sodium retention) which regulates other electrolytes in blood.
Glucocorticoids
Includes Cortisol.
In zona fasciculata
In response to ACTH.
Fights stress by inc. blood glucose levels & dec. inflammation.
Gonadocorticoids
Sex steroids (Androgens & Estrogens)
Responsible for female sex drive, pubic & axillary hair growth.
Glucagon
Secreted by alpha cells of Islet of Langerhans.
In response to low blood glucose levels.
Inc. blood glucose by releasing glucose from glycogen.
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.
Somatostatin
Secreted by delta cells of Islets of Langerhans.
Modulates the secretion of insulin and glucagon.
Prostaglandins
Secreted by most organs.
Coordinate tissue activity.
Author
meigan_2009
ID
9196
Card Set
Unit 2 Hormones
Description
The Senses and Endocrine System
Updated
2010-03-05T04:27:09Z
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