front 1 Valves open in response to _________________ on their two sides. | back 1 Blood pressure |
front 2 List the chambers/ vessels that the four valves connect:
| back 2 1. R. ventricle
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front 3 a. Ventricular filling occurs during______ ventricular_________.
| back 3 1. Mid-late
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front 4 During Ventricular systole, what closes the AV valves? | back 4 Intraventricular pressure rising and causing ventricular contractions. |
front 5 During ventricular systole, what opens the semilunar valves? | back 5 Ventricles contract, raising pressure, bblood pressure then forces the semilunar valves open. |
front 6 During Isovolumetric relaxation, what closes the semilunar valves? | back 6 When blood pressure in the artery exceeds the blood pressure in the ventricle. |
front 7 During Isovolumetric relaxation, what opens the AV valves? | back 7 When blood pressure in the ventricle exceeds the blood pressure in the arteries. |
front 8 Why is hypertension hard on the heart? | back 8 Beacuse overtime high blood pressure causes heart muscles to thicken, which means more work to pump blood through vessels. It can cause heart disease because of heart constantly overworking. |
front 9 Looking at the ventricular volume graph, the stroke volume is approximately how many ml? | back 9 70ml |
front 10 During the four phases listed below, state whether the AV and semilunar valves are opened or closed:
| back 10 1. AV: Opened, Semilunar: Closed
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