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Blood/Heart

Blood/Heart. Heart Facts. The heart you see drawn on the average Valentine is only a rough representation Of the actual structure of the heart. Your heart is actually shaped more like an Upside down pear. Crazy Fact.

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Blood/Heart

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  1. Blood/Heart

  2. Heart Facts The heart you see drawn on the average Valentine is only a rough representation Of the actual structure of the heart. Your heart is actually shaped more like an Upside down pear.

  3. Crazy Fact If you took all of the blood vessels out of an average child, and laid them out in one line, The line would be over 60,000 miles long! An adult’s vessels would be closer to 100,000 Miles long! The earth’s circumference is 24,902 miles long.

  4. Development of the Heart 120 beats per minute. As the child grows, the heart rate slows. A seven year old Child’s heart beats about 90 times per minute. By the age of 18, the heart rate Has stabilized to about 70 beats per minute. As the body develops, the heart grows at the same rate as the fist. So an infant’s Heart and fist are about the same size at birth.

  5. Average Heart Beat Average heart beats about 70 times per minute. Average lifetime, the heart beats More than two and a half billion times, without ever pausing to rest. Like a pumping Machine, the heart provides the power needed for life.

  6. Expand and Contracts Expands and contracts 100,000 times per day. Pumping 5 to 6 Quarts of blood each minute, or About 2,000 gallons per day. (5 Liters per minute.)

  7. Red Blood Cells 5 million red blood cells, 10,000 white cell, and 250,000 platelets in a pin-head Size drop of blood.

  8. White Blood Cells The White Blood Cell (WBC) Count measures two components: the total number of WBC's (leukocytes), and the differential count. The differential count measures the percentages of each type of leukocyte present. WBC's are composed of granulocytes (neutrophils, eosinophils, and basophils) and non-granulocytes (lymphocytes and monocytes). White blood cells are a major component of the body's immune system.Indications for a WBC count include infectious and inflammatory diseases; leukemia and lymphoma; and bone marrow disorders.

  9. Blood Platelets Activated (pink/purple) and non-activated platelets (orange) with channels of the open canalicular system (OCS). Platelets are cell fragments in the blood that play an essential role in blood clotting and wound repair. Platelets can also activate certain immune responses. Platelets are formed in the red bone marrow, lungs, and spleen by fragmentation of very large cells known as megakaryocytes. Platelets in the blood are small oval disks and are termed non-activated platelets or thrombocytes.

  10. Circulation of Blood Normal adult, it takes Close to 1 minute for a Blood cell to circulate the Body.

  11. 5 liters of blood Capillaries Veins Arteries The average adult has about five liters of blood living inside of their body, coursing Through their vessels, delivering essential elements, and removing harmful wastes. Without blood, the human body would stop working.

  12. If the heart is in the middle of your chest, why do you hear it on the left side? The ventricles meet at the bottom of the heart to form a pointed base which points Toward the left side of your chest. The left ventricle contracts most forcefully, so you Can best feel your heart pumping on the left side of your chest.

  13. 4 Chambers of the Heart • Heart Parts • The heart is made up of four different blood-filled areas, and each of these areas is called a chamber. There are two chambers on each side of the heart. One chamber is on the top and one chamber is on the bottom. The two chambers on top are called the atria (say: ay-tree-uh). If you're talking only about one, call it an atrium. The atria are the chambers that fill with the blood returning to the heart from the body and lungs. The heart has a left atrium and a right atrium. • The two chambers on the bottom are called the ventricles(say: ven-trih-kulz). The heart has a left ventricle and a right ventricle. Their job is to squirt out the blood to the body and lungs. Running down the middle of the heart is a thick wall of muscle called the septum (say: sep-tum). The septum's job is to separate the left side and the right side of the heart.

  14. Blood Flow from the Heart • The atria and ventricles work as a team — the atria fill with blood, then dump it into the ventricles. The ventricles then squeeze, pumping blood out of the heart. While the ventricles are squeezing, the atria refill and get ready for the next contraction. So when the blood gets pumped, how does it know which way to go? • Well, your blood relies on four special valves inside the heart. A valve lets something in and keeps it there by closing — think of walking through a door. The door shuts behind you and keeps you from going backward. • Two of the heart valves are the mitral (say: my-trul) valve and the tricuspid (say: try-kus-pid) valve. They let blood flow from the atria to the ventricles. The other two are called the aortic (say: ay-or-tik) valve and pulmonary (say: pul-muh-ner-ee) valve, and they're in charge of controlling the flow as the blood leaves the heart. These valves all work to keep the blood flowing forward. They open up to let the blood move ahead, then they close quickly to keep the blood from flowing backward.

  15. Path the Blood Takes Through the Heart • Blood enters the Heart through the SUPERIOR VENA / INFERIOR VENA CAVA • Blood enters into the RIGHT ATRIUM • Then goes through the TRICUSPID VALVE • Blood enters into the RIGHT VENTRICLE • Blood leaves the Heart through the PULMONARY ARTERY (Pulmonic Valve) • Blood goes to the LUNGS to pick up OXYGEN • Blood enters back into the Heart to the LEFT ATRIUM • Blood goes through the MITRAL VALVE • Blood enters into the LEFT VENTRICLE • Blood leaves the Heart through the AORTA to the BODY • Arteries carry oxygen rich blood AWAY from the Heart. • Capillaries connect the ARTERIES and the VEINS • Veins take blood BACK to the Heart.

  16. Heart Transplant • A heart transplant is when you completely replace the damaged heart with a healthy heart of someone else who has just died.

  17. Heart Disease • A heart attack occurs when blood flow to part of the heart muscle slows or stops and the heart muscle is damaged. • Atherosclerosis is the deposit of fatty material and in the lining of the arteries. • Stroke occurs when a blockage in an artery stops the blood flow to the brain. It can result in paralysis of part of the body and can affect your speech. • Abnormally high blood pressure is also known as hypertension.

  18. Risk Factors you can do something about • Eat healthy foods • Exercise regularly • Manage Stress • Maintain a healthy weight • Alcohol and tobacco free

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