1. Why do people feel faint if they stand up too fast?
ATB
Why do people feel faint if they stand up too fast?

2. Circulatory System Components: heart, blood vessels, lungs Functions:
Transports nutrients, gases (carbon dioxide and O2), waste, water, hormones
Distributes heat
Maintains homeostasis: maintains correct amounts of nutrients, gases, and wastes and correct temperature.

4. Arteries vs. Veins
- Arteries carry oxygenated blood from the heart to the body
- Veins carry blood towards the heart for purification.

5. Blood Pressure
Blood pressure is the pressure exerted by circulating blood on the walls of blood vessels

6. Heart Structure

7. 1. aorta

8. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs)

9. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium

10. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle

11. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle
8. inferior vena cava

12. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle
8. inferior vena cava
9. left pulmonary artery (to lungs)
10. left pulmonary veins (from lungs)

13. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle
8. inferior vena cava
9. left pulmonary artery (to lungs)
10. left pulmonary veins (from lungs)
11. left atrium

14. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle
8. inferior vena cava
9. left pulmonary artery (to lungs)
10. left pulmonary veins (from lungs)
11. left atrium
12. left atrioventricular valve
13. aortic valve

15. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle
8. inferior vena cava
9. left pulmonary artery (to lungs)
10. left pulmonary veins (from lungs)
11. left atrium
12. left atrioventricular valve
13. aortic valve
14. left ventricle

16. 1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4
1. aorta 2. superior vena cava 3. right pulmonary artery (to lungs) 4. right pulmonary veins (from lungs) 5. right atrium 6. right atrioventricular valve 7. right ventricle
8. inferior vena cava
9. left pulmonary artery (to lungs)
10. left pulmonary veins (from lungs)
11. left atrium
12. left atrioventricular valve
13. aortic valve
14. left ventricle
15. abdominal aorta

17. Blood Flow in the Heart 9. left pulmonary artery (to the lungs)
3. right pulmonary artery (to the lungs)
10. left pulmonary veins (from the lungs)
4. right pulmonary veins (from the lungs)
8. inferior vena cava (from the body)
15. abdominal aorta (to the body)

19. Heart Rate Lab Objectives
Calculate your heart rate while laying, sitting, standing, and after exercise.
Compare your resting (sitting) heart rate with the class average.

20. What’s Your Heart Rate?

21. What happens to heart rate during exercise? WHY??

22. Does being “in shape” influence your heart rate?

23. The Effect of Caffeine on Heart Rate

24. The Effect of Caffeine on Heart Rate

25. The Effect of Temperature on Heart Rate

26. The Effect of Temperature on Heart Rate