0-1 chapter 17 - hormones Flashcards
melatonin
Pineal
Target tissue - hypothalamus (brain to brain - diencephalon to hypothalamus)
Effect: regulates body clock, promotes sleepiness, may involve reproduction, circadian rhythm
(More produced at night)
BRAIN/HYPOTHALMUS. - SLEEP CYCLE
TRH
Thyroid Releasing Hormone
Hypothalamus
Target anterior pituitary
Effect: TSH secretion
CRH
Corticotropin Releasing Hormone
Hypothalamus
Target anterior pituitary
Effect ACTH SECRETION
GnRH
Gonadotrophin Releasing Hormone
Hypothalamus
Target anterior pituitary
Effect FSH, LH Secretion
GHRH/GHIH
Growth Hormone Releasing/Inhibiting Hormone
Hypothalamus
Somatostatin inhibits secretion of hGH
Target anterior pituitary
Effect: Release or inhibit secretion of hGH
PRH/PIH
Prolactin Releasing/Inhibiting Hormone
Hypothalamus
Target anterior pituitary
Effect: promotes or suppresses release of prolactin
TSH
Thyroid Stimulating Hormone
Anterior Pituitary
Target - thyroid
Effect - stimulates synthesis and release of T3/T4
ACTH
Adrenocorticotropic Hormone
Anterior Pituitary
Target - adrenal cortex
Effect: controls production and release of cortisol
FSH, LH
Follicle Stimulating Hormone
Luteinizing Hormone
Anterior Pituitary
Target : gonads
Effect : release estrogen, proestergine, testosterone
hGH
Human Growth Hormone
Anterior Pituitary
Target - body
Effect - maintain mass, repair
PRL
Prolcatin
Anterior Pituitary
Target- mammary glands
Effect - initiate and maintain milk production
ADH
Antidiuretic Hormone
Posterior Pituitary
Target - kidneys
Effect - decrease urine
Oxytocin
Posterior Pituitary
Target - uterus, breast
Effect - muscle contraction
T3, T4
Thyroid
(T3) triiodothyronine - thyroid gland, follicular cells (source), general (target) - INCREASES METABOLISM
(T4) tetraiodothyronine - thyroid gland, follicular cells (source), general target - INCREASES METABOLISM (usually converted to T3 first)
Target - general
Effect - increase metabolism
Calcitonin
Thyroid(parafollicular cells) , bone tissue (target), increases calcium storage in the bone, LOWERING Ca++ LEVELS
Target bone tissue
Effect - increase calcium storage in bone