1. The Circulatory System By: Will Rodriguez & Eric McGinnis

2. Parts of the Heart Left and Right Atrium Left and Right Ventricle Valves Vessels (Pulmonary Artery, Pulmonary Vein, and Aorta) Superior and Inferior Vena Cava

3. Atrium And Ventricle Atrium- –(Holding chamber for blood entering the heart, Produces the “Lub” sound.) Ventricle- –(Pumps the blood from the heart, walls are thicker than the atrium and have more muscles, produces the “Dub” sound.)

4. Valves & Vessels Valves (Mitral Valves- control between left atrium and left ventricle, Semi Lunar valves-control flow from ventricle to arteries. Vessels (Pulmonary Vein- transports blood from the right ventricle to the lungs, Pulmonary Artery- transports blood from the lungs to the left atrium, Aorta- carries blood to other parts of the body from the heart, Vena Cava- carries deoxygenated blood back to the heart.

5. Arteries Classified as one of the three types of vessels Blood vessels that carry oxygen, rich blood, and nutrients away from the heart to the body. Pulmonary artery- only artery that does not carry oxygenated blood Arterioles- smallest type of artery Aorta- Largest artery

6. Pumping Action The pumping action of the heart is when the heart is pumping blood through the body to places that need it. So a heart is like a vacuum it cleans up the body by passing blood through the veins. When the blood passes through your body is sends of oxygen and nutrients to places that need them.

7. Blood Flows Blood flows through a complex system of tubes which send blood through your body. At each tissue or organ the blood drops off oxygen and nutrients and exchange for waste products. Blood first pumps from your heart, once pumped it sends of blood through blood vessels to get to each part of your body. Blood flows through 60,000 blood vessels to get to each part of the body. Also, the heart pumps 2,000 gallons of blood per day.

8. Heart Disease Heart disease is the number one killer in Canada. Some things may cause heart disease like: smoking, stress, being overweight, physically inactive, and diets rich in saturated fat. The most common symptom is angina. Angina can be described as a discomfort, heaviness, pressure, aching, burning, fullness, squeezing or painful feeling in your chest. Some treatments for heart disease are coronary angiography, coronary stenting, and heart transplants. To prevent having heart disease don’t smoke, stay in shape, and most of all eat healthy.

9. Vocabulary Aorta-The main trunk of the systemic arteries, carrying blood from the left side of the heart to the arteries of all limbs and organs except the lungs. Artery- Any of the muscular elastic tubes that form a branching system and that carry blood away from the heart to the cells, tissues, and organs of the body. Arteriosclerosis- a chronic disease in which thickening, hardening, and loss of elasticity of the arterial walls result in impaired blood circulation. Atrium- a chamber or cavity to which several chambers or passageways are connected. Blood pressure- the pressure exerted by the blood against the walls of the blood vessels, especially the arteries. Capillary- Relating to or resembled a hair, fine and slender. Deoxygenated blood- The functions of the heart are to pump oxygenated blood around the body, and to deliver deoxygenated blood and waste products to the lungs.

10. More Vocabulary Diastole- The normal rhythmically occurring relaxation and dilation of the heart chambers Heart- The chambered muscular organ in vertebrates that pumps blood received from the veins into the arteries Pace maker- One who sets a pace for itself Pulmonary artery- An artery that carries venous blood from the right ventricle of the heart to the lungs Vein- Any of the membranous tubes that form a branching system Septum- a thin partition or membrane that divides two cavities or soft masses of tissue in an organism Systole- the rhythmic contraction of the heart especially of the ventricles Valve- a membranous structure in a hollow organ or passage Vein- any of the membranous tubes that form a branching system and carry blood to the heart. Ventricle- A small cavity or chamber within the body or the organ

11. THE END…