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Circulation of Blood

Circulation of Blood. Systemic and Pulmonary Circulation. Systemic Circulation. Carries blood throughout the body Path: Left Ventricle Aortic Semilunar Valve Aorta Arteries Arterioles Capillaries Venules Vena cava Right Atrium. Pulmonary Circulation.

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Circulation of Blood

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  1. Circulation of Blood Systemic and Pulmonary Circulation

  2. Systemic Circulation • Carries blood throughout the body • Path: • Left Ventricle • Aortic Semilunar Valve • Aorta • Arteries • Arterioles • Capillaries • Venules • Vena cava • Right Atrium

  3. Pulmonary Circulation • Carries blood to and from the lungs • Path: • Right Ventricle • Pulmonary Semilunar Valve • Pulmonary Arteries • Lungs • Pulmonary Veins • Left Atrium

  4. Blood Pressure • The force of blood in the blood vessels • Systolic • The top number • Pressure when heart is contracted • Diastolic • The bottom number • Pressure when the heart is relaxed

  5. Taking Your Blood Pressure 1. Place the cuff on the upper portion of the arm. Tighten the cuff so only one finger can be slipped under the cuff. Ensure the sphygmomanometer, or measurement valve, is visible on the inside of the arm. Check to see if the valve is closed on the cuff; turn the screw clockwise until tight. 2. Manually locate the brachial pulse using your pointer and middle fingers. Locate the artery beneath the elbow, on the inside of the arm. 3. Put stethoscope earpieces into ears. Place the round end of the stethoscope, the diaphragm, on the brachial artery 4. Begin pumping the cuff until the meter reads about 150 mmHg. Slowly turn the valve to release the air gradually. 5. Listen for the first sound, and read the meter at that point. Record the number as the systolic pressure. Continue to listen for when the sound changes, or drops off. Record the number as the diastolic.

  6. Atherosclerosis • Hardening of the arteries when cholesterol, and other substances build up in the walls of arteries and form hard structures called plaques.

  7. Stroke • Caused by a blockage of an artery that supplies blood to the brain. • When a clot forms in one of those arteries and stops blood flow, a section of the brain begins to die. • Stroke symptoms often don't include any pain or discomfort, and are more likely associated with losing feeling or the ability to move. Much of the time, strokes affect only one side of the body.

  8. Heart Attack • Damage to the muscle of the heart, usually from a lack of blood flow. • Most of the time, a blood clot forms in one of the arteries that supplies the heart muscle with blood, blocking the flow of blood. • As the heart muscle starves, it begins to die, causing classic heart attack symptoms • Chest pain • Pressure, heaviness or tightness in the chest • Pain or pressure in the neck or jaw • Pain or pressure in one or both arms (especially the left) • Shortness of Breath • Sweating • Nausea • Pain or throbbing between the shoulder blades

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