cardiac function Flashcards
(14 cards)
EDV
end diastolic volume
ESV
end systolic volume
what is EDV
the volume of blood just before contraction
what is ESV
the volume of blood just after contraction (left overs)
equation for cardiac output
heart rate x stroke volume
equation for stroke volume
EDV - ESV
increase in EDV leads to increases in..
myocardial performance/contractility
effect of icnreasing EDV
increased myocardial starting length
increased cross bridge formation
increased myocardial contractility
what is the length-force relationship
as EDV increases, myocardial contractility increases
define stroke volume
the volume of blood ejected by the right/left ventricle in a single contraction.
define contractility
the strength of the hearts contraction during systole
sympathetic innervation of the heart
Noradrenaline at B1 receptors on cardiac muscle cells
hormonal control of the heart
circulating adrenaline and adrenaline
myocardial infarction
decreases compliance and ventricular contractility
