Endocrine Glands Red Stuff Flashcards
this connects the hypothalamus and the pituitary gland
infundibulum
the hypothalamus regulates secretions of this
anterior pituitary
what is an extension of the hypothalamus
posterior pituitary
the 9 major hormones produced within the pituitary gland do what two main functions
regulate body functions
regulate the secretions of other endocrine glands
neurohypophysis describes what part of the pituitary
posterior pituitary
adenohypophysis describes what part of the pituitary
anterior pituitary
what connects the hypothalamus and the posterior pituitary
hypothalamohypophysial tract
the posterior pituitary glands produce which hormones
ADH, and Oxytocin
how are the hormones in the hypothalamus passed to the posterior pituitary?
axons
ADH stimulant
increased blood osmolality and decreased blood pressure
ADH target tissue
kidney tubules
ADH response
increased water retention
oxytocin stimulant
uterine stretch, cervical stimulation, nipple stimulation
oxytocin target tissue
uterus, mammary glands
oxytocin response
stimulates smooth muscle, uterus contraction, stimulates milk release
this it thought of as the “cuddle” hormone
oxytocin
these are hormones that stimulate the secretion of other hormones from target tissues
tropic hormones
GH stimulant
GHRH
GH is inhibited by
GHIH
GH targets
most body tissues
indirectly by somatomedins to liver and skeletal muscles
GH response
promotes protein synthesis and tissue building
this type of growth disorder comes from hyposecretion of GH during childhood
pituitary dwarfism
this type of growth disorder comes from hypersecretion of GH during childhood
gigantism
this type of growth disorder comes from hypersecretion of GH during adulthood
acromegaly
TSH is stimulated by
TRH
TSH is inhibited by
thyroid hormones
TSH targets
thyroid gland
TSH response
secretion of thyroid hormones, T3 and T4
ACTH stimulated by
CRH
ACTH stimulated by
cortisol
ACTH targets
adrenal cortex
ACTH response
cortisol secretion
MSH is stimulated by
POMC
MSH does what
increases melanin deposition in the skin
what produces pain relief and is associated with runner’s high
B endorphins
prolactin is stimulate by
PRH
Prolactin is inhibited by
PIH
prolactin targets
mammary glands and ovaries
prolactin response
enlarged mammary glands, increased milk productionl
LH and FSH are stimulated by
GnRH
LH and FSH target
gonads
what is the only gland that stores hormone
thyroid gland
where is iodine produced
thyroid
thyroglobulin is produced where
follicles within the thyroid
what secretes calcitonin
parafollicular cells
iodine is necessary for converting Tg to what
T3 & T4
This is the condition for abnormal enlargement of the thyroid gland
Goiter
This is the condition for inadequate production of thyroid hormones (associated with iodine deficiency)
hypothyroidism
this causes increased metabolic rate
hyperthyroidism
calcitonin is stimulated by
high Ca2+ concentration in blood
calcitonin targets what
bone, kidneys and intestines
calcitonin response
decreased osteoclast activity
increases Ca2+ excretion by kidneys
Where are the parathyroid glands located
embedded in posterior thyroid
what cells secrete parathyroid hormone
chief cells
PTH is stimulated by
decreased blood Ca2+ levels
PTH is inhibited by
increased blood Ca2+ levels
PTH target tissues
bones, kidneys, intestines
PTH response
increase blood Ca2+ concentrations
when blood Ca2+ is increased, calcitonin secretion _____ and bone resorption and Ca2+ uptake ______
increase, decrease
when blood Ca2+ is decreased, Parathyroid hormone secretion ______ and bone reabsorption and Ca2+ uptake ______
increase, increase
the inner layer of the adrenal gland is
medulla
the outer layer of the adrenal gland is called______ and is made of what three layers
cortex
zona glomerulosa
zona fasciculata
zona reticularis
mineralocorticoids (ex: aldosterone) are produced by what layer of the adrenal cortex
zona glomerulosa
glucocorticoids (ex: cortisol) are produced by what layer of the adrenal cortex
zona fasciculata
androgens are produced by what layer of the adrenal cortex
zona reticularis
glucocorticoids decrease ___________________ and _______________
intensity of inflammation and immune response
what is both an endocrine and exocrine organ
pancreas
acinar cells are the ______ gland portion of the pancreas
exocrine
the pancreatic islets are the ______ gland portion of the pancreas
endocrine
islets of langerhans are composed of what 3 types of cells
alpha, beta, delta
within the pancreas these cells secrete glucagon
alpha
within the pancreas these cells secrete insulin
beta
within the pancreas these cells secrete somatostatin (which inhibits GH)
delta
melatonin is produced by what organ
Pineal gland
what stimulates melatonin production
absence of light
what does melatonin help regulate
sleep-wake cycles
thymosin is produced where
thymus gland
thymosin is responsible for
immune system maturation
gastrin is produced where
gastrointestinal tract