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A&P II Endocrine
Practical Practice - Endocrine System
Question | Answer |
---|---|
Homeostatic imbalance: hypersecretion of GH in children | gigantism |
Homeostatic imbalance: hypersecretion of GH in adults | acromegaly |
Homeostatic imbalance: hyposecretion of insulin | diabetes m |
Homeostatic imbalance: hyposecretion of adh | diabetes insipidus |
What is the proper term for the type of regulation of electrolytes by the hypothalamus? | humoral |
Which of the following hormones will function in the MAINTENANCE of the immune system? | Cortisol |
What substance will be released by the hypothalamus to initiate the production of thyroid hormone? | TRH (Hypothalamus > TRH > TSH > TH |
What hormone will stimulate the sustentacular cells of the testes to stimulate spermatogenesis? | FSH |
Identify one target of growth hormone: | bone, muscle, etc. |
The ___ cells of the pancreas produce _____, which is the HYPERGLYCEMIC AGENT. | alpha cell/glucagon |
What pituitary hormone will stimulate the release of aldosterone? | acth |
GHIH source | hypothalamus |
Cortisone source | zona fasiculata |
PRL (Prolactin) source | anterior lobe pituitary |
Glucagon source | alpha cells |
Insulin source | beta cells |
aldosterone source | zona glomerulosa |
adh source | hypothalamus |
lh source | anterior lobe pituitary |
calcitonin source | thyroid |
pth source | parathyroid |
2 releases of posterior pituitary | oxytocin and adh |
which hormone is parafollicular? | calcatonin |
acth is released in response to what? | crh |
thyroid gland releases two primary hormones: | thyroid and calcitonin |
increases metabolic rate and body heat production, maintaining blood pressure, tissue growth and development | th |
release in response to increased calcium levels in blood | calcitonin |
antagonist of pth | calcitonin |
the 7 hormones of the anterior pituitary are known as | "tropic" |
all hormone release starts at the... | hypothalamus |
2 gonadotropins released in response to GnRH | fsh/lh |
Ovaries: fsh promotes ... | egg development |
Testes: fsh promotes... | sperm production |
Ovaries: lh promotes... | ovulation |
Testes: fsh promotes ... | sex hormones, androgens, (testosterone!!) |
Prl is inhibited by | pih from hypothalamus |
stimulates mammary gland development and during pregnancy it stimulates milk development. | prolactin |
gh is also known as | somatotropin |
gh is mediated by which two hormones? | ghrh / ghih |
gh indirect | liver |
gh direct | not well understood |
msh inhibitor | dopamine (pih) |
supraoptic nuclei releases... | adh |
paraventricular nuclei releases | oxytocin |
anterior lobe of pituitary is regulated by... | "glandular" |
posterior lobe of pituitary is regulated by... | "neural" |
adipose cells release... | leptin |
is located in the hypophyseal fossa of the sella turcica of the sphenoid bone | pituitary |
secretes 9 peptide hormones | pituitary |
hypothalamus connected to pituitary via | infundibulum |
posterior lobe is connected to hypothalamus via ... | neurons (will only store neurons) |
anterior lobe is connected to hypothalamus via... | capillary beds |
a portal system begins and ends with... | veins |
high concentrations of adh result in | vasoconstriction |
has incomplete blood-brain barrier | hypothalamus |
do both lobes use 2nd messenger systems? | yes |
function of oxytocin | stimulate uterine contraction |
clusters of neurons in hypothalamus | supraoptic nuclei |
adh in brain acts as | neurotransmitter |
function of thyroid | increases cellular metabolism |
adenohypophysis - | anterior lobe |
hyposecretion of gh | pituitary dwarfism |
location of hypothalamus | diencephalon |
hypothalamus is connected to | limbic system and pituitary gland |
hypothalamus regulates 3 processes: | homeostasis, involuntary organs, hormones |
3 ways to penetrate incomplete blood-brain barrier | neurally, hormonally, humorally |
of the 3 ways to penetrate incomplete blood-brain barrier, which method has a DIRECT control? | Neural |
main visceral control center is a description for which area? | hypothalamus |
colloid - protein rich or deficient? | rich |
looks at body hormones | hormonal |
looks at electrolytes, h20, etc | humoral |
direct electrical connection to adrenal medulla | neural |
has protein rich jelly in its follicles | thyroid |
cells that secrete calcitonin | parafollicular |
need to have .... in colloid to create t3/t4 | iodine |
Hyposecretion of t3/t4 | hypothyroidism |
long term hypothyroidism | myxodemia |
congenital hypothyroidism | cretinism |
toxic goiter, hypersecretion of t3/t4 | Grave's disease |
increased levels of ca+ and phosphates, kidney stones | hyperparathyroidism |
lipid based steroids | corticosteroids |
why are corticosteroids important? | lipids can pass through cell membrane - not everything can go through incomplete blood-brain barrier |
associated with "buffalo hump", "moon face" and increased glucocortocoid | cushing's disease |
hyposecretion of both gluco and mineral corticoids; hypoglaucemia/hypotension, bronzing of skin... | addison's disease |
prime source for progesterone and estrogen | corpus luteum |
structure associated with lh | corpus luteum |
paired atop each kidney | adrenal glands |
produces corticosteroids (over 12 dozen) | adrenal cortex |
layer of adrenal cortex associated with mineralcorticoids | zona glomerulosa |
layer of adrenal cortex associated with glucocorticoids | zona fasciculata |
later of adrenal cortex associated with gonadotropins | zona reticularis |
function of insulin | lowers blood sugar |
function of glucagon | raises blood sugar |
3p's of diabetes | polyuria, polydypsia, polyphagia |
blood ph decreases resulting in which diabetes complication | ketoacidosis |
hyperinsulin = | hypoglaucemia |
strictly neurally connected | adrenal medulla |
catecholamines | epi-norepi |
2 hormones associated with pineal gland | synthesis of melatonin from seratonin |
gland associated with sleep patterns | pineal |
located partly behind the stomach in the abdomen, its a mixed gland of both endocrine and exocrine cells | pancreas |
acinar cells | pancreatic juice |
epo production takes place where | kidney |
heart is associated with which hormone | anp |
inhibits aldosterone | anp |
t-cell maturation takes place where | thymus |
skin produces cholcalciferol, an inactive form of which vitamin | d3 |
direct gene activators | steroidal hormones |
why is it important that steroidal hormones are direct gene activators? | can go directly into cell, to nucleus, bind to receptor, trigger messenger rna to make whatever we want |
which hormones are amino acid based? | peptide |
which hormones are NOT direct gene activators? | monoamines |
what do non direct gene activators need? | 2nd messenger system |
hormones travel throughout the entire body; why then do they only activate certain cells? | target based receptors (microbio - markers) |
3 regulating factors of target cell specificity | blood levels of hormone (least), # of receptors, strength of bond between hormone and receptor |