1. Oxygenated blood leaves the left ventricle by way of the pulmonary artery pul

Question

1. Oxygenated blood leaves the left ventricle by way of the

pulmonary artery

pulmonary vein

aorta

vena cava

2. Rate-pressure product (RPP) is computed as

systolic blood pressure ¸ heart rate          

systolic blood pressure x heart rate

diastolic blood pressure ¸ heart rate

diastolic blood pressure x heart rate

none of the above

9. P-wave is to atrial depolarization as T-wave is to ___________.

atrial repolariztion

ventricular depolarization

ventricular repolarization

AV nodal depolarization

10. Cardiac Output

= heart rate x stroke volume

increases in proportion to exercise intensity

increases to a maximum of about 25L (or slightly more in male endurance athletes)

a and b only

all of the above

Explanation / Answer

1.aorta   (oxygenated blood leaves the left ventricle and passes through the aortic valve to the aorta)

2.systolic blood pressure X heart rate (RPP= max HR(bpm) X maxSBP(mmhg) )

9.ventricular repolarization (the T wave in ECG represents repolarization of the ventricular myocardium)

10.increases in proportion to exercise intensity.(the normal cardiac output at rest is 5ltrs/min.for a typical young person,the cardiac output might go up to about 20 ltr/min at the peak of the exercise).

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