a) Match the regions (Red, Green, Blue) with the functiontions. A. Contraction of the atria B. Contraction of the ventricles C. Repolarization of ventricles D. Repolarization of atrium b) Estimate the heart rate (beats per min) corresponding to the ECG above given that one heart beat takes 0.75s. beats per minute

It is generally accepted that a relatively low diastolic vascular pressure is more important than a relatively low systolic vascular pressure because: A. diastolic vascular pressure is the pressure that determines the length of diastole. B. diastolic vascular pressure directly determines stroke volume. C. diastolic vascular pressure ultimately determines and controls contractility. D. diastolic vascular pressure is a force the heart must compete with to open the aortic valve. E. None of the above is correct.

a. Only between cardiac cycles b. Ventricular diastole c. Ventricular systole d. Throughout the cardiac cycle

A) The term used to describe one complete heartbeat, or the time for both contraction and relaxation of the heart muscle is the _____________________. B) The term _____?_________ refers to ventricular contraction, while the term ______?________ refers to ventricular relaxation. C) f a patient has a heart rate of 75 beats per minute, then what is the average length of time that each of the following parts of that cycle lasts? (time in secs) -atrial contraction:  ____________________ -atrial relaxation:   ____________________ -ventricular contraction ____________________ -quiescent period:  _____________________ -1 entire cycle: _____________________ D)  When you listen to (auscultate) heart sounds, what you are hearing are the sounds of valves _______?______________. E.) A heart murmur indicates some kind of valve ________?____________.