Hormones I Need to Know Flashcards
What produces oxytocin?
hypothalamus
Stimulus and Inhibition of oxytocin
stimulus- stretching of uterus or suckling of infant at breast; inhibition- absensce of stimulus
Target organ and effects of oxytocin
uterus: stimulates contraction of labor; breast: milk ejection
Effects of hyper/hyper secretion of oxytocin
rare and rare
Where is antidiuretic hormone produced?
ADH; hypothalamus
Stimulus and inhibition of ADH
stimulus: increasing blood solute concentration (dehydration) or low BP; inhibtion: adequate hydration and alcohol
Target organ and effects of ADH
kidney tubules: absorb water from filtrate and return to blood
Effects of hypo/hypersecretion of ADH
hyposecretion: diabetes insipidus; hypersecretion: syndrom of inappropriate ADH secretion (SIADH)
Where is growth hormone (GH) produced?
anterior pituitary
Stimulus and INhibition of GH
stimulus: growth hormone releasing hormone (GHRH); inhibition: high blood levels of GH, hyperglycemia, and growth hormone inhibiting hormone
Target organ and effects of GH
liver, muscle, and bone: stimulates somatic (body) cell growth and proliferation (division); increases muscle mass; mobilizes fats; spares glucose; promoties protein synthesis
Effects of Hypo/hypersecretion of GH
hyposecretion: pituitary dwarfism in children; hypersecretion: giantism in children; acromegaly in adults
Where is thyroid stimulating hormone produced (TSH)?
anterior pituitary
What are the tropic hormones?
TSH; ACTH, FSH, LH
Stimulus and inhibtion of TSH
stimulus: thyrotropin releasing hormone; inhibition: high blood levels of TH and GHIH
Target organ and effect of TSH
thyroid gland: stimulates release of THH
Effects of Hypo/hypersecretion of TSH
hyposecretion: may cause myxedema ; hypersecretion: effects similar to graves disease
Where is adrenocorticotropic hormone released?
anterior pituitary
Stimulus and inhibition of ACTH
stimulus: released by corticotropin releasing hormone; inhibtion: high blood levels of glucocroticoids
Target organs and effects of ACTH
adrenal cortex: stimulates release of glucocoritcoids and androgens (mineralocorticoids to less extent)
Effect of hypo/hyper secretion of ACTH
hypo- rare; hyper- cushings disease
Where is follicle stimulating hormone produced (FSH)?
anterior pituitary
Stimulus and inhibtion of FSH
stimulus: gonadotropin releasing hormone (GnRH); inhibtion: high blood levels of estrogen, testosterone and inhibin
Target organ and effects of FSH
ovaries: stimulates follicle maturation and production of estrogens; testes- stimulates sperm production
Effects of hypo/hypersecretion of FSH
hypo-failure of sexual maturation; hyper - none
Where is Luteinizing Hormone (LH) produced?
anterior pituitary
Stimulus and inhibition of LH
stimulus- gonadotropin-releasing hormone (GnRH); inhibition- high blood levels of estrogen, progesterone, and testosterone
Target Organ and effects of LH
ovaries: triggeres ovulation and stimulates production of estrogen and progesterone; Testes: promotoes testosterone production
Effects of hyposecretion and hypersecretion of LH
hypo-failure of sexual maturation; hypo - none