1. The Circulatory System
Chapter 23

2. Two types of circulatory systems

3. Human Cardiovascular System
The pulmonary circuit carries blood between the heart and the lungs

4. Human Cardiovascular System
The systemic circuit carries blood between the heart and the rest of the body

6. Figure 23.5-s1 1
Heart is relaxed.
Blood flows in.
DIASTOLE
0.4
sec

7. 2 1 DIASTOLE SYSTOLE Atria contract. Blood is forced into ventricles.
Figure 23.5-s2 2
Atria contract.
Blood is forced into ventricles. 1
Heart is relaxed.
Blood flows in.
0.1
sec
DIASTOLE
SYSTOLE
0.4
sec

8. 2 1 DIASTOLE SYSTOLE 3 Atria contract.
Figure 23.5-s3 2
Atria contract.
Blood is forced into ventricles. 1
Heart is relaxed.
Blood flows in.
0.1
sec
0.3
0.8 sec
sec
DIASTOLE
SYSTOLE
0.4
sec 3
Ventricles contract.
Blood is pumped out.

9. Regular heartbeat vs. heart murmur

10. Heart’s natural pacemaker

11. Heart rate can be measured with an ECG

12. Artificial pacemakers
In certain kinds of heart disease, the heart’s electrical control fails to maintain a normal rhythm

13. Do you know your resting heart rate?

14. Improving Heart Health

15. Blood vessels

19. Blood
Plasma
Red blood cells
White blood cells
Platelets

20. Red Blood Cells - Erythrocytes

21. Anemia
Low RBC or low hemoglobin = low oxygen results in tiredness and exhaustion

22. White Blood Cells - Leukocytes

23. Leukemia
Leukemia is cancer of the body's blood- forming tissues, including the bone marrow and the lymphatic system

24. Platelets

25. Cardiovascular Disease

27. Helpful review videos https://www.youtube.com/watch?v=9fxm85Fy4sQ