Cardiovascular System (Part 1) Flashcards
The right AV valve is __cuspid and the lift AV valve is __cuspid
tricuspid
bicuspid
What is the left bicuspid valve aka?
the mitral valve
__stole is the contraction phase, whereas __stole is the relaxation phase
systole
diastole
Which node is the pacemaker of the heart
SA node
What is the purpose of the AV node?
It delays the impulse by 1/10 of a second, allowing the atria to contract before the ventricles
In order for fat to metabolized what do the following equal?
MET = -
RPE = __-__
Minute Ventilation = __
5-7
12-14
25 L
Muscle fibers of the heart use ____ energy for contraction
aerobic
Which chamber of the heart is the thickest?
left ventricle
Regular physical training and chronic hypertension lead to what 2 changes in the left ventricle?
- thickening of the ventricular walls
- increase in ventricular mass
Is there an increase in wall thickness in the atria and right ventricle due to training?
No, this is the difference between training and pathological
How do you calculate cardiac output (Q)?
Q = HR x SV
Explain why cardiac output can be the same in trained and untrained people
Trained people have lower HR and higher SV, whereas untrained people have higher HR and lower SV
How do you calculate stroke volume?
SV = End-diastolic volume (EDV) − End-systolic volume (ESV)
What is the ejection fraction?
The ratio of available blood to pumped blood
How do you calculate the EF?
EF = (SV/EDV)
