cardiovascular physiology Flashcards
1
Q
parasympathetic system innervates
A
the atria, no effect on ventricles, decreases hRT rate+ contractility
2
Q
what do cardiac myocytes rely on for energy?
A
oxidative phosphorylation
3
Q
contractile unit of the myocardium is the
A
sarcomere
4
Q
stroke volume is related to
A
end diastolic volume
5
Q
predominant causes of thrombosis
A
endothelial cell injury
turbulent blood flow
stasis
6
Q
in setting of stasis you can get
A
venous thrombi vs turbulence (arterial thrombi)
7
Q
when do congenital cardiac anomalies arise
A
3-8 weeks gestation
8
Q
effect of shock in the non-progressive phase
A
tachycardia
peripheral vasoconstriction
renal conservation of fluid
9
Q
what happens in the progressive phase of shock
A
lactic acid produced
blood pools in periphery
clinically confused
urine output diminishes
