BIOL 325 Physiology Name: Section: Homework #9. Cardiac Cycle and Smooth Muscle
ID: 3513778 • Letter: B
Question
BIOL 325 Physiology Name: Section: Homework #9. Cardiac Cycle and Smooth Muscle Instructions. You may print out the homework and write in the answers. 1. (6 pts) Match the letters on the graphs with the descriptions below. Use the letters on the EKG for electrical descriptions and the letters on the ventricular volume graph for all other descriptions. Use multiple letters if it is appropriate all valves are closed atrial depolarization AV valves are open ventricular systole begins ventricular repolarization atrial contraction occurs here 0 left ventricular pressure is greater than atrial pressure but less than aortic pressure region where end systolic volume is described region where semilunar values are open region where greatest pressure is reached in the left ventricle if the heart rate slowed, the value in this region would increase before ventricular contraction region where atrial pressure is greater than ventricular pressureExplanation / Answer
2. Cardiac volume is the product of stroke volume and heart rate.
3. Decreasing heart rate will decrease end diastolic volume.increasing blood pressure will decrease ESV and EDV. Decreasing heart rate will decrease cardiac output.
4. Smooth, skeletal, cardiac, smooth, skeletal, cardiac
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