1. Read chapter 23 introduction - 23.2 Reading quiz Wed (Notes checked)
Circulatory System
Read chapter 23 introduction Reading quiz Wed (Notes checked)
General function/purpose of the circulatory system?

2. Structures (organs) of the circulatory system

3. Anatomy

4. Pulmonary Circuit
Systemic Circuit

5. Anatomy of Heart

7. Cardiac
Cycle

8. Conduction system of the heart

11. Comparison of Arteries, veins, capillaries

12. Artery Vein Arteriole Venule
Fig. 23-7c
Capillary
Epithelium
Basal lamina
Valve
Epithelium
Epithelium
Smooth
muscle
Smooth
muscle
Connective
tissue
Connective
tissue
Artery
Vein
Arteriole
Venule

13. How would you test changes in circulatory rates?

14. Possible solutions Nicotine Ethanol Acetaminophen or ibuprofen
Caffeine
Adderall
Make a hypothesis for each of the solutions above

15. Effects of common chemicals on Circulatory Rates in Goldfish

16. Lab Report Hypotheses Procedure Data Discussion/conclusion
What will you measure?
Table
Appropriate graph (line or bar?)
Discussion/conclusion
Hypotheses supported?
Research chemicals
Why these results?
Include a short application where you could apply to real life

17. Composition (components) of blood

18. Liquid portion that carries many dissolved materials (proteins, ions)
Function in clotting
Function in the immune response: defense against invading microorganisms
Transport oxygen

19. Blood Solvent  carries substances Osmotic balance Buffer (pH)
Clotting
Defense

21. Formation of blood cells
Develop from pluripotent cells in red marrow of various bones
Stem cells that can develop into any blood cell type or platelet forming cell
Controlled by a kidney hormone  erythropoietin

23. Exchange of materials Capillaries have very thin walls
Capillaries have very thin walls
Substances can cross through these thin walls
Between blood and interstitial fluids (fluid outside of blood that surrounds all tissues/cells)
Student Misconceptions and Concerns
1. One function of the circulatory system that is rarely discussed is the transport of heat. Blood vessels near the surface of the body expand when we are overheated, releasing some of this excess to the environment. Conversely, during periods of exposure to cold, blood is shunted away from the skin to conserve heat.
Teaching Tips
1. Figure 23.11B depicts the movements of fluid out of and back into capillaries because of changes in osmotic pressure. The text references Module 24.3 for further discussion of the role of the lymphatic system in fluid removal. If you do not plan on addressing Chapter 24, consider covering the role of lymphatic vessels in your discussion of Chapter 23.
2. Students who have little practice interpreting electron micrographs might benefit from a closer analysis of Figure 23.11A, in which an electron micrograph is paired with explanatory figure. For example, simply recognizing nuclei in micrographs can be an important starting point in interpreting cellular details.
Copyright © 2009 Pearson Education, Inc.

24. Nucleus of epithelial cell
Capillary
lumen
Capillary
wall
Interstitial
fluid
Nucleus of
epithelial
cell
Figure 23.11A A capillary in cross section.
Muscle
cell
Clefts between
the epithelial
cells of the
capillary wall

25. Blood and interstitial fluid exchange substances by
Blood and interstitial fluid exchange substances by
Diffusion  substances moving from high to low concentration
Pressure  pushes fluid through clefts (spaces) between epithelial cells
Blood pressure forces fluid out of capillaries at the arterial end
Osmotic pressure draws in fluid at the venous end
Student Misconceptions and Concerns
1. One function of the circulatory system that is rarely discussed is the transport of heat. Blood vessels near the surface of the body expand when we are overheated, releasing some of this excess to the environment. Conversely, during periods of exposure to cold, blood is shunted away from the skin to conserve heat.
Teaching Tips
1. Figure 23.11B depicts the movements of fluid out of and back into capillaries because of changes in osmotic pressure. The text references Module 24.3 for further discussion of the role of the lymphatic system in fluid removal. If you do not plan on addressing Chapter 24, consider covering the role of lymphatic vessels in your discussion of Chapter 23.
2. Students who have little practice interpreting electron micrographs might benefit from a closer analysis of Figure 23.11A, in which an electron micrograph is paired with explanatory figure. For example, simply recognizing nuclei in micrographs can be an important starting point in interpreting cellular details.
Copyright © 2009 Pearson Education, Inc.

26. Tissue cells Osmotic pressure Osmotic pressure Arterial end of
capillary
Venous
end of
capillary
Blood
pressure
Blood
pressure
Figure 23.11B The movement of fluid into and out of a capillary.
Interstitial
fluid
Net fluid
movement out
Net fluid
movement in

27. Blood flow through capillaries can be regulated
Why would this be necessary?

30. Blood clotting

32. Question: starting in the left atrium, list in order the structures that the blood would flow through before returning to the left atrium