Pulmonary circuit
1. Explain how regular exercise reduces the risk of heart
disease.
2. Define stroke volume and discuss how stroke volume can be
altered. Explain the effect of changes in stroke volume on cardiac output using
the appropriate formula for determining cardiac output.
3. Trace the path of one drop of blood from the time it
enters the right atrium until it enters the left atrium. What is this circuit
called?
4. The refractory period of cardiac muscle is much longer
than that of skeletal muscle. Why is this a desirable functional property?
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