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Self Tests

Heart Regulation #2
Intrinsic and Extrinsic Regulation

Your Answer

Correct Answer

1. "Preload" is related to the stretching of the myocardial walls - which is related to volume of blood in a ventricle just prior to ventricular contraction.  True
False
2. Decreasing preload will cause an increase in Stroke Volume (SV)  True
False
3. SV = CO X HR  True
False
4. Exercising will increase "preload" and therefore increase Cardiac Output (CO).  True
False
5. Both sympathetic and parasympathetic nerves innervate the heart.  True
False
6. There is a cardio-regulatory center located in the frontal lobe of the brain.  True
False
7. Increased parasympathetic stimulation of the heart will increase heart rate (HR).  True
False
8. There is a cardio-regulatory center located in the medulla oblongata - which is located in the brain stem.  True
False
9. Baroreceptors "measure" blood pressure in both the right and left ventricle.  True
False
10. Baroreceptors are located in the walls of the internal carotid artery and in the aorta.  True
False

 
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