hypertension Flashcards
1
Q
sympathetic nervous system BP mediator
A
Norepinephrine (vasoconstriction)
2
Q
RAAS
A
renin-angiotension-aldosterone system:
increases blood volume to compensate for low BP
3
Q
vasopressin
A
regulates renal water retension
4
Q
epinephrine
A
stimulates B receptors, causes muscle vasodilation
5
Q
endothelial mediators
A
Nitric oxide, prostacycline (dilate), endothelin (constricts)
6
Q
Inflammatory mediators
A
histsamine, prostaglandins (dilation)
7
Q
primary or essential hypertension counts for _____ of cases
A
90%
8
Q
secondary hypertension: kidney failure
A
kidneys fail to excrete water and salt leading to blood volume expansion and hypertension.
9
Q
Endocrine hypertension
A
excess hormone stimulates increased cardiac output and/or peripheral resitance
