Flashcards in Western-Endocrine System Deck (25):
Anterior Pituitary-Growth Hormone
Growth of body cells:
Hypo = dwarfism
Hyper = gigantism/acromegaly
Initiates & maintains milk secretion of mammary glands.
Stimulates adrenal cortex to secrete hormones.
Anterior Pituitary-Thyroid Stimulating
Controls secretion of hormones by the thyroid. Most sensitive test for Hypothyroidism.
Anterior Pituitary-Melanocyte Stimulating
Stimulates dispersion of melanin for skin color.
Anterior Pituitary-Folical Stimulating
Women: initiate development of ova, induce secretion of estrogen by ovaries
Men: stimulates the testes to produce sperm.
Anterior Pituitary-Leutinizing Hormone
Women: w/ estrogen, triggers ovulation & formation of corpus leutium (progesterone).
Men: stimulates interstitial cells in testes to produce testosterone.
Stimulates uterine contraction during labor, aids mammary in milk ejection.
Posterior Pituitary-Antidiuretic Hormone
Decreases urine volume (increases water retention), raises BP by constricting vessels.
Hypothalamus-Releasing & Inhibiting Hormones
Stimulates or inhibits secretion of specific hormones. Works w/ emotions.
(Triiodothyronine T3, Thyroxine T4)
Regulates metabolism, growth & development, activity of nervous system
Lower blood levels of calcium. Increases calcium storage in bones.
Increases blood levels of calcium. Removes calcium from storage from bones.
Pancreas (Islets of Langerhans)-Glucagon
Raises blood glucose-conversion of glycogen into glucose (A cells).
Pancreas (Islets of Langerhans)-Insulin
Lowers blood glucose-transport into cells, convert glucose to glycogen (B cells). Controls carbohydrate metabolism.
Pancreas (Islets of Langerhans)-GH Inhibiting Factor
Inhibits secretion of insulin and glucagon.
Increases sodium reabsorption & potassium loss.
Increases blood glucose levels & participates in carbohydrate metabolism.
Adrenal cortex-Androgens & Estrogens
Secreted in minute amounts.
Increases HT, blood pressure & blood glucose levels. Great to counteract stress.
Regulates male sex hormones, increases rate of cellular metabolism & production of RBCs.
Produces the female sex cells & sex hormones. Stimulates the enlargement of accessory organs, external structures & develop/maintain of female secondary sexual characteristics, menstrual cycle.
Helps the uterus to prepare for pregnancy. Stimulates the development of mammary glands, menstrual cycle.
A substance formed by the pineal gland that seems to depress gonadal fxn which inhibits reproductive fxn involved in circadian rhythms.