Random
During ejection, what percentage of blood shoots out of the ventricles?
60%
Polycythemia vera is when hematocrit exceeds _____%?
60%
In what phase of the cardiac cycle are the tricuspid and bicuspid/mitral valves open?
Phase 1
13%
What portion of the vasculature has the lowest pressure?
Veins
What is the average resting heart rate for females?
75-85bpm for females
65-75bpm for males
In females, 35-40% of blood is comprised of what?
Hematocrit
- in males, hematocrit = 40-45%
In what phase of the cardiac cycle is ventricular pressure the highest?
Phase 3
Is pressure is higher in the systemic or pulmonary circuit?
systemic
Arteries are highly elastic or compliant?
Elastic
Whats the term for the amount of blood that is pumped through the heart per minute?
Cardiac Output
The ______ circuit carries blood to the lungs to get oxygenated?
pulmonary
What two phases of the cardiac cycle are during systole?
2 & 3
Following chronic endurance training that is properly designed, all of the following increase except (VO2max, Max HR, Lactate Threshold)
What portion of the vasculature is responsible for slowing down blood velocity?
Arterioles
What is the average stroke volume in healthy individuals?
70mL
What type of exercise will increase blood pressure the most: running, leg press or bench press?
leg press
The Frank Starling Mechanism is associated with what regulator of stroke volume?
Preload
During exercise, heart rate is primarily regulated by what division of the nervous system?
Sympathetic nervous system
T/F Afterload is the same as end systolic volume?
F
functional sympatholysis
In well trained individuals, SV plateaus at what % of VO2max?
We don't see necessarily see a plateau in well-trained individuals (in untrained at ~40% VO2max)
What regulator of stroke volume is inversely related to SV?
Afterload
Going from resting heart rate to 100bpm is a result of?
Decreased parasympathetic drive
What would be someones VO2 if they were exercising at 8 METs?
= 28 mL/kg/mim