Cardiac pumping dynamics
Max heart rate can be estimated by taking 220 minus your age.
Cardiac output is defined as stroke volume X HR. Take a resting heart rate on yourself and calculate your cardiac output assuming your stroke volume is 80mL as shown on the graph above._____________
Calculate what your cardiac output would be if you had your max HR and your stroke volume went up to 110 mL? ________________. Is this a realistic number_______?
If your end-diastolic volume (EDV) is 150mL and your stroke volume is 60 mL what would your end systolic volume be?_______________.
If I had a stroke volume of 55mL and a ESV of 50mL what would my EDV be?______________ Ejection fraction is defined as. SV/EDV. Calculate the stroke volume for all of the scenarios above. __________ _______________ _______________ ___________
If ejection fraction falls below 50% it is an indicator that the heart may be progressing through heart failure. Why?_________________________________________________________
characteristic of skeletal muscle. Identify: striations, branching fibers, nuclei of myocardial cells, intercalated discs.
4. Questions
How is cardiac muscle tissue structurally and functionally different from smooth and skeletal muscle?
Where do arteries carry oxygen-rich blood and veins carry oxygen-poor blood?
Where do arteries carry oxygen-poor blood and veins carry oxygen-rich blood?