Mod 8: adrenal gland Flashcards
Adrenal cortex secretes __,___,__
stimulated by
glucocorticoids, mineralocorticoids, gonadocorticoids
stimulated by ACTH
3 types of glucocorticoids
All have effects on ____, provide ___properties, ___supressing effects
cortisol, corticosterone, cortisone
effect metabolism, anti-inflammatory, growth suppressing effects
Functions of the glucocorticoids
inhibit cellular uptake of ___
stimulate _____secretion
metabolite of cortisol acts as ____=_____nerve cell function in brain
inhibit cellular uptake of glucose
stimulate gastric acid secretion
metabolite of cortisol acts as barbiturate and depresses nerve cell function in brain
Main mineralcorticoid
aldosterone (^renal reabsorption of NA, vPotassium)
release controlled by RAAS, angiotensin 2
ACE inhibitors =^K
adrenal Medulla secretes catecholamines ___,___,___
innervated by both the ___ and ___
epinephrine, norepinephrine, dopamine
sympathetic and parasympathetic nervous system
Both catecholamines epi and norepi increase blood pressure by increasing ____ and ____
they also increase ___, ___levels, and ___metabolism
increasing heart rate and vasoconstriction
increase respirations, glucose levels, cellular metabolism
Cushings syndrome- chronic over secretion of ___
d/t:
exogenous __ use
over secretion of ___ d/t pituitary tumor
ectopically produced ____ from ______, or ______
cortisol
exogenous steroid use
over secretion of ACTH d/t pituitary tumor
ectopically produced ACTH from non-pituitary carcinoma, or adrenal adenoma
Addison’s disease- disease of the ____= v___ and v___secretion
caused by ____ reaction that targets the adrenal cortex= adrenal ____and ____
adrenal cortex= vCortisol and aldosterone secretion
autoimmune reaction
adrenal atrophy and hypofunction
Causes of addison’s disease
HIMFACT
HIV infections metastatic tumors fungal infections amyloidosis cessation of steroid therapy TB
Addisons sx appear after ______
90% of gland has been destroyed
Addisons s/s
opposite of cushings
hypoglycemia =fatigue, weakness, apathy, confusion , anorexia, n/v/d, and pain and the addisonian triad
Addisonian triad
HHH
hyperkalemia- vAldosterone=xK excretion
hyponatremia-vAldosterone xNa retention
hypotension-vCortisol xKeep vascular tone
Mineral corticoid deficiency sx’s
hypovolemia dehydrated postural hypotension dizzy hyperkalemia salt cravings
Addisonian crisis
lack of cortisol and aldosterone
=severe hypotension, vascular collapse d/t fluid loss and vVascular tone