Cardiac Function Quiz

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Questions and Answers

What is the relationship between preload and contractility?

Preload increases contractility (correct)
Preload decreases contractility
Preload has no effect on contractility
Preload and contractility are unrelated

What is an example of preload?

The pressure that the ventricular muscles must generate to overcome the higher pressure in the aorta
The pressure in the ventricles when they are full of blood (correct)
The pressure in the aorta when the ventricles are empty
The pressure in the ventricles when they are empty

What is Starling’s law?

The more the heart muscles stretch during diastole, the more forcefully they contract during systole (correct)
The more forcefully the heart muscles contract during systole, the more the heart muscles stretch during diastole
The more the heart muscles contract during systole, the more forcefully they stretch during diastole
The more forcefully the heart muscles stretch during diastole, the more the heart muscles contract during systole

What is contractility?

The ability of the ventricles to contract normally (B) Signup and view all the answers

What is the definition of afterload?

The pressure that the ventricular muscles must generate to overcome the higher pressure in the aorta to get the blood out of the heart (A) Signup and view all the answers