1. Chapter 15 Cardiovascular System
Part I
Structure of the Heart

2. Introduction
Heart 1. 2.
Circulation of Blood
Cardiovascular system 3.

3. Introduction
Pulmonary Circuit 1. 2. 3.
Systemic Circuit

4. Fig. 15.1

5. Size and Location of the Heart1. 2.
Location 3. 4. 5.

6. Fig. 15.2

7. Fig. 15.3

8. Coverings of the Heart Pericardium (pericardial sac) Pericarditis 1.2. 3. 4.
Pericarditis

9. Fig. 15.4

10. Wall of the Heart
Epicardium 1. 2. 3.
Myocardium
Endocardium

11. Fig.15.5

12. Heart Chambers and Valves
Four hollow chambers 1.
2. Atria a. b. c.
3. Ventricles

13. Fig. 15.6

14. Heart Chambers and Valves
Right atrium
1. Receives blood . c.
2. Low O2 blood
Tricuspid valve 1. 2. 3. 4. 5. 6.

15. Fig. 15.7

16. Heart Chambers and Valves
Right Ventricle
1. Contracts a. b.
2. Thinner muscular wall (than l. ventricle)
Pulmonary Valve 1. 2. 3. 4.

17. Heart Chambers and Valves
Left atrium
1. Receives blood from lungs a. b.
Mitral Valve 1. 2. 3. 4. 5.

18. Fig. 15.6

19. Fig. 15.6

20. Heart Chambers and Valves
Left Ventricle
1. Contracts a. b.
2. Thicker walls than r. ventricle
Aortic Valve 1. 2. 3.

21. Fig. 15.8, 15.9