Cardiovascular Physiology Flashcards
(46 cards)
2 ways blood blood enters the heart
superior vena cava and inferior vena cava
blood from the upper extremity
superior vena cava
blood from the lower extremity
inferior vena cava
azygous vein rains
lumbars into superior vena cava
80% of blood PASSIVELY flows into the right ventricle
20% needs atrial contraction
Right Atrium
SA node impulse to AV node and delayed P-R
Av Nodal Delay
End of diastole,
tricuspid valves close = is volumetric contraction
Right Ventricle
pulmonary artery carries ___
deoxygenated blood
blood exits ___ to the ___
2 arteries to the lungs
blood in the lungs is oxygenated by
Bohr Effect
Bohr Effect
4 o2 molecules per hemoglobin
blood exists lung via
4 pulmonary veins into the left atrium
pulmonary veins carry ____ blood
oxygenated
80% PASSIVELY flows into left ventricle
20% needs P wave AV nodal delay
Left Atrium
end diastolic volume
120 ml
end systolic volume
50 ml
\
stroke volume =
80 ml
cardiac output =
CO = sv x hr
P wave
atrial depolarization / contractions
QRS
ventricular depolarization / contraction
T wave
ventricular repolarization
Atrial depolarization is hidden in
QRS complex
P-R interval =
Av node delay
R =
isovolumetric contraction
