(Solved) PhysioEx 9.0 Exercise 5 Activity 6

Sky

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12 years ago

Part A:
Increase in stroke volume is a result of _______.

A.   Increased preload
B.   Increased EDV
C.   Increased contractility of the heart, increased EDV and increased preload
D.   Increased contractility of the heart

Part B:
An increase in venous return _______.

A.   Results in decreased preload
B.   Decreases EDV
C.   Occurs with severe blood loss
D.   Occurs during exercise

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robertling

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Valued Member

12 years ago

1. With an increase in end diastolic volume, preload increases stretching the cardiac muscle more. In order to maintain cardiac output, the heart would increase contractility and stroke volume.

2. The pump rate decreased when the stroke volume increased. The heart doesn’t have to pump as often to
maintain cardiac output.

3. With increased cardiovascular conditioning, the heart is able to pump more forcefully resulting in a greater stroke volume. With increased stroke volume, the heart doesnít have to pump as often to maintain cardiac output.

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Romina Rivas

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Sky Author

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12 years ago

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bio_man

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PhysioEx 9.0 Exercise 5 Activity 6

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