1. Get 11c Notes sheet from front
On your notes:
Identify some things that can happen as a result of low blood pressure
Identify some things that can result from high blood pressure

2. Blood Vessels
11c

3. The Vessel System Much like the roadway system through the body
Freeways
Surface Streets
Alleys

4. Blood Vessels: The Vascular System
Function: Taking blood to the tissues and back
Arteries
Arterioles
Capillaries
Venules
Veins
Slide 11.23
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

5. The Vascular System Slide 11.24 Figure 11.8b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

6. Blood Vessels Arteries Function: Carry blood away from the heart
Thick, strong vessel walls
Very high pressure
Part of the Freeway System

7. The Vascular System Slide 11.24 Figure 11.8b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

8. Blood Vessels Capillaries
Function: allow transfer of substances between blood and body cells
Smallest blood vessels - only 1 cell thick!!!
Connect on one side to arterioles and on the other side to venules
Like the alleyways of the vascular system

9. The Vascular System Slide 11.24 Figure 11.8b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

10. Blood Vessels Veins Function: bring blood back to the heart
Thinner than arteries
Not as much pressure
Have valves to help keep blood moving back toward the heart
Very low pressure
Part of the freeway system

11. The Vascular System Slide 11.24 Figure 11.8b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

12. Movement of Blood Through Vessels
Most arterial blood is pumped by the heart
Veins use the milking action of muscles to help move blood
Figure 11.9
Slide 11.27
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

13. Capillary Beds True capillaries – exchange vessels
Oxygen and nutrients cross to cells
Carbon dioxide and metabolic waste products cross into blood
Figure 11.10
Slide 11.28b
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

14. Diffusion at Capillary Beds
Figure 11.20
Slide 11.29
Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings

15. Heart Attack!
Answer question #1 solo. You will get a chance to talk with other people.
Read 2-4