Cardiovascular System: Factors Affecting Blood Pressure Interactive Physiology Worksheet (Pearson)

Cardiovascular System: Factors Affecting Blood Pressure Worksheet



1. The total amount of friction between the blood and the vessel wall, which makes it more

difficult for the blood to flow, is called ______________.

Total peripheral resistance

2. The thickness or stickiness of blood, which affects its ability to flow, is called __________.

Blood viscosity

3. What factor affecting blood pressure is altered by excessive salt intake?

Blood volume

4. How is blood pressure affected by excessive sweating?

It decreases

5. What effect would increased concentration of vasoconstrictor substances in the blood have on

total peripheral resistance?

Total peripheral resistance would increase

6. Which single factor determining blood pressure is altered by heart activity?

Cardiac output

7. How would an increase in total peripheral resistance affect blood pressure?

Blood pressure would increase

8. Total peripheral resistance is determined by blood viscosity, vessel length, and vessel

diameter. Which one of these factors has the greatest effect on total peripheral resistance?

Vessel diameter

9. How does an increase in the total vessel length cause an increase in blood pressure?

By increasing total peripheral resistance

10. An increase in arterial vessel diameter would have what effect on blood pressure?

Blood pressure would decrease