Presentation on theme: "Who wrote the book of love?"— Presentation transcript:
1 Who wrote the book of love? An introduction to your cardiovascular system
2 Functions of the CV System Carries needed substances to cellsCarries waste products away from cells
3 What does the CV system transport? Carried by bloodOxygen from lungs to body cellsSugar to cells to produce energyWaste ProductsPicks up CO2 waste from cellsCarries to the lungs to be exhaledDisease FightersTransports cells that attack disease-causing microorganisms
4 The HeartA hollow, muscular organ that pumps blood throughout the bodyAbout the size of your fist, center of chestWhen the heart beats, blood is pushed through blood vessels
5 The Heart’s Structure Atrium: Upper Chamber Ventricle: Lower Chamber Receives blood that comes into the heartVentricle: Lower ChamberPumps blood out of heartValves: Flaps of tissue that prevent blood from flowing backward.
6 How the Heart Works 2 phases Relaxed: when heart relaxes it fills with blood.Contracts: when heart contracts if pumps blood forward
7 VesselsAfter leaving the heart, blood travels in vessels through the body.3 kinds of vesselsArteries: blood carried away from heart.Capillaries: tiny vessels where substances are exchanged between blood and body cells.Veins: carry blood back to the heart.
8 Where Does the Blood Go? 2 loops Loop One: Loop Two: To the lungs and back to the heartLoop Two:To the body and back to the heart
9 The Blood’s Winding Road The average human has about 60,000 miles of blood vessels in their body.
10 Blood Made up of 4 components Plasma Red Blood Cells White Blood Cells Platelets
11 PlasmaCarries molecules that come from the break-down of digested food.About 10% of plasmaWaterAbout 90% of plasma
12 Red Blood Cells Produced in bone marrow Take up oxygen in the lungs and deliver it to cells in the body.Made of mostly hemoglobinOxygen carrier
13 White Blood Cells Produced in bone marrow The body’s disease fighters WBC’s fewer in number than RBC’s
14 PlateletsCell fragments that play an important part in forming blood clots.Heal woundsHelps prevent infection and loss of blood.
15 Blood Types Four different types: A, B, AB, and O Type determined by markers on the RBC’sUniversal Donor: Type OUniversal Receiver: Type AB
16 Cardiovascular Health CV DiseaseAtherosclerosis: artery wall thickensMay lead to heart attackHeart Attack: when blood flow to part of the heart is blocked.
17 HypertensionHigh blood pressureCan damage heart and arteries