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Circulatory System Today you need your: 1. Clickers 2. Circulatory System Packet 3. Pen/Pencil 4. Cerebrum 5. Self in a seat by bell time! 9/24/2014 1 • The Circulatory System 9/24/2014 2 1. What is the circulatory system? • The body’s transport system. • Carries –Oxygen –Waste –Nutrients to the whole body 9/24/2014 3 2. What is another name for the circulatory system? • Cardio/vascular system – Cardio = Heart – Vascular = Blood vessels 9/24/2014 4 3. What are the three main parts of the circulatory system? a. heart b. blood vessels c. blood 9/24/2014 5 4. What is the job of the heart? • To pump blood throughout the body. 9/24/2014 6 5. What is the job of the blood vessels? • To carry blood throughout the body. 9/24/2014 7 Did you know that….. * 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! 9/24/2014 8 Arteries •Carry blood away from the heart. •Red blood = oxygen 9/24/2014 9 Veins: carry blood from the body back to the heart & lungs to get oxygen. 9/24/2014 10 6c. What are the three types of blood vessels and each of their jobs? Capillaries: The tiniest blood vessels that connect the arteries and veins. 9/24/2014 11 The Heart • The Heart 9/24/2014 12 The Blood The Blood 9/24/2014 13 Bone Marrow – Blood Production 9/24/2014 14 7. What are the 4 parts that make up the blood? a. Plasma b. White blood cells (WBC) c. Platelets d. Red blood cells (RBC) 9/24/2014 15 8a. Plasma • Liquid part of the blood. • Carries stuff. 9/24/2014 16 8b. Red Blood Cells • Red blood cells: carry oxygen to and carbon dioxide away from the cells. 9/24/2014 17 8c. White blood cells • Helps fight disease and infection by attacking germs. 9/24/2014 18 8d. Platelets • Platelets: Helps blood clot which seals cuts and prevents excess to blood loss. 9/24/2014 19 What is Blood Donation? • 18-60 years old • Takes about 30 min. • Donate= every 8 weeks =56 days • Platelet apheresis donors may give every 7 days 9/24/2014 20 Why don’t people donate blood? 9/24/2014 21 9. What is a blood transfusion? • To replace blood with blood from another person. 9/24/2014 22 Blood Types • Blood Types 9/24/2014 23 10. What are the 4 blood types? 9/24/2014 24 11. Heart Disease • • • • Hypertension Stroke Heart attack Arteriosclerosis Atherosclerosis • Anemia 9/24/2014 25 Blood Pressure • Blood Pressure 9/24/2014 26 9/24/2014 27 11a. HYPERTENSION • High Blood Pressure • Blood pressure higher than normal • 120/80 normal 9/24/2014 28 11b. Stroke – Brain Attack blood vessels in the brain are blocked or burst 9/24/2014 29 11c. Heart Attack • Blood flow to the heart stops. • Due to clogged arteries. –Smoking –Stress –Diet 9/24/2014 30 11d. Arteriosclerosis • Artery walls harden. • Plaque builds up. • Atherosclerosis = cholesterol build up. 9/24/2014 31 11f. Leukemia • Is a type of cancer of the blood or bone marrow. 9/24/2014 32 11e. Anemia • Anemia is a condition in which the body does not have enough healthy red blood cells. • Red blood cells provide oxygen to body tissues. 9/24/2014 33 12. Ways to keep healthy! • Exercise Regularly • Eat a balanced diet. • Avoid Sugars • Control blood pressure • Avoid fatty foods • Avoid Tobacco 9/24/2014 34 9/24/2014 35