2. The Heart

3. What is the function of the heart?
What kind of tissue is the heart made of?

4. Pig heart

5. The Heart -
a muscular organ that pumps blood through the circulatory system

6. Your  pumps 5 liters of blood every minute
Your  pumps 5 liters of blood every minute. How many liters of blood does it pump every day?
7,200 liters/day

7. Your  beats 100,000 times a day. How many times does it beat in a lifetime of 75 years?
2.7 billion times

8. How is the heart adapted for transport?

10. Left Side
Right Side

11. What is the internal structure of the heart?

12. 4 chambers (open spaces
in heart)

13. Atria
two chambers on top
Ventricles
two chambers on bottom

14. Left Atrium
Right Atrium
Left Ventricle
Right Ventricle

15. How are the atria and the ventricles different?

16. Left Atrium
Right Atrium
Left Ventricle
Right Ventricle

17. Atria receive blood from the body and lungs
Atria pump blood to ventricles
Ventricles
pump blood to the body and lungs

18. How is the left ventricle different from the right ventricle?
L.V.
R.V.

19. Why is the heart really two pumps in one?

21. Heart animation http://www.smm.org/heart/heart/pumping.htm

23. Superior Vena Cava InferiorVena Cava Pulmonary Veins Aorta
L.A.
R.A. L. V. R. V.
Aorta
Pulmonary Artery
Septum

25. S. vena cava
Aorta
P. artery
P. Vein
R. Atrium
L. Atrium
R. Ventricle
L. Ventricle
Septum
I. Vena Cava

27. Starting with the right atrium, list the numbers of the structures blood passes through until it reaches the right atrium again 3 4 2 7 8 9 6
1 (or 5)

28. Animation of bloodflow through the heart

34. Put numbers in the circles (1 and 9 are already done)
Label A, B, C, D, E, F, G
Color Oxygenated blood red and deoxygenated blood blue

37. Trace the path of a red blood cell from a capillary in the brain through the circulatory system and back to a capillary in the brain again. List all the structures it passes through.

40. Capillary in toe
Artery to the leg
Artery to all body tissues
Left side of the heart
Lungs
Right side of the heart
Vein from the leg
Capillary in toe

45. What causes blushing?

46. A, B, C, and D represent different activities
A, B, C, and D represent different activities. Which letter represents the following:
eating
exercising
sitting in a hot moist sauna
resting C A D B

47. 14 13

49. What causes the sound of the heartbeat?

50. Stethoscope
a medical instrument for listening to the sounds generated inside the body

51. As the valves open and close, they make a “lub-dub” sound.
Heartbeat
As the valves open and close, they make a “lub-dub” sound.

52. “lub”
“dub”

53. Tricuspid: valve on right.
Bicuspid: valve on left.
Semilunar valves: move blood from ventricles to arteries. Stop blood backflow.

54. Control of the Heartbeat
The heart has a built in ability to contract – even when outside the body.
SA Node & AV Node: Groups of specialized cells that cause atria and ventricles to contract.

56. Pacemaker

57. Heart Transplant – transporting heart

58. What is blood pressure?

59. Ventricles contract, Atria relax Ventricles relax, Atria contract
The pressure exerted by the blood against the walls of the blood vessels, especially the arteries
Blood Pressure
Ventricles contract, Atria relax
Ventricles relax, Atria contract
120 / 80
sphygmomanometer

61. Taking someone’s blood pressure

62. Measuring Blood Pressure
Check Pulse
Inflate Cuff while listening w/stethoscope till you can’t hear the pulse
Inflate a bit more (unless it hurts!)
Release pressure gradually with valve
When you hear 2 consecutive pulses take first reading (systolic pressure)
Continue releasing pressure gradually
When you can’t hear the pulse anymore take the second reading (diastolic pressure)

68. S. Vena cava
Aorta
Pulm. Artery
Pulm. Vein
L. Atrium
L. Ventricle
Vena Cava
R.Ventrivle
R. Atrium
Septum

69. 6 3 2 5 4
H A R V E Y