Circulatory Response to Exercise

2. Pressure receptors in the aorta and carotid arteries that help influence blood pressure.
3. Discontinuous exercise can also be referred to as ___________ exercise.
5. Blood flow to this area of the body tends to decrease with exercise intensity.
6. These fibers spread the wave of depolarization throughout the ventricles.
8. Refers to the "thickness" (or "thinness")of the blood.
9. During exercise, vessels to working muscles tend to do this.
11. Can help increase venous return via SNS stimulation.
13. Heart muscle is under this type of neural control.
15. Circuit that pumps blood everywhere to the body, except the lungs.
19. Also known as "MAP."
24. Where exchange of oxygen, carbon dioxide, and other nutrients are exchanged.
25. Includes both the cardiovascular and pulmonary systems.
26. Balance between the SNS and PNS.
28. These organs help influence blood pressure via control of blood volume.

1. During exercise, vessels feeding organs and inactive tissues tend to do this.
4. This "node" is considered the pacemaker of the heart.
7. The contraction phase of the cardiac cycle.
10. Large vessels that carry blood away from the heart.
12. HR and CO tend to increase _________ with intensity.
14. HR _________ can be determined by calculating the standard deviation of the R-R interval.
16. Blood flow is directly proportional to the ________ difference between the two ends of the system.
17. Also known as "EDV."
18. This variable has the largest impact on resistance to blood flow.
20. This pressure is defined as the difference between systolic and diastolic pressure.
21. Liquid portion of blood.
22. This nerve regulates the heart at rest.
23. Pressure in the ventricles is low during this phase of the cardiac cycle.
27. This equation includes cardiac output and a-vO2 Difference.