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Understanding the Circulatory System: Blood, Heart, and Blood Vessels

Explore the vital components of the circulatory system, including blood vessels, the heart, and blood circulation pathways, with a focus on oxygen transport, nutrient delivery, and waste removal. Learn about coronary, pulmonary, and systemic circulation, as well as the role of blood types and common blood disorders.

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Understanding the Circulatory System: Blood, Heart, and Blood Vessels

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  1. Chapter 19 The Circulatory System

  2. The Circulatory System • Blood vessels carry blood to every part of your body. • Blood moves oxygen and nutrients to cells and carries carbon dioxide and other wastes away from the cells.

  3. The Heart • Organ made of cardiac muscle tissue. • Located behind breastbone and between lungs. Has FOUR compartments called chambers. • Atria • The two UPPER chambers • are called right and left atriums • Ventricles • The two lower chambers

  4. Coronary Circulation • Coronary circulation- the flow of blood to the tissues of the heart. • Supplies heart with oxygen and nutrients • When these are blocked it results in a heart attack.

  5. Pulmonary Circulation • Pulmonary circulation • The flow of blood through heart to lungs and back to heart. • Moves between heart and lungs • Drops off CO2 in the lungs and picks up oxygen to take back to the heart.

  6. Systemic Circulation • Oxygen-rich blood moves to all of your organs and body tissues, except the heart and lungs, by systemic circulation. • Largest of the three sections of Circulatory system. • Nutrients and oxygen- delivered From heart to arteries. • Delivered to body cells and Exchanged for CO2 and wastes. • Blood returns to your heart. http://glencoe.mcgraw-hill.com/sites/dl/free/0078617022/161752/00051936.html

  7. Path that Blood Takes • 1. Blood enters right atrium in veins from body tissues • 2. Right atrium contracts and blood enters right ventricle. • 3. Right ventricle contracts. • 4. Blood leaves right ventricle in pulmonary arteries. • 5. Blood in pulmonary arteries exchanges CO2 for oxygen. • 6. Oxygen-rich blood returns to left atrium. • 7. Left atrium contracts and blood enters left ventricle. • 8. Left ventricle contracts. • 9. Blood leaves heart in arteries to body tissues.

  8. Blood Vessels • Arteries • Vessels that move blood away from the heart • Veins • Vessels that move blood toward the heart • Capillaries • Tiny blood vessels that connect arteries and veins

  9. Blood Pressure • A force exerted on the walls of blood vessels by blood.

  10. Section 2- Blood • Functions of Blood • Carries oxygen from your lungs to all your body cells. • Carries waste products from your cells to your kidneys to be removed • Transports nutrients and other substances to your body cells. • Fight infections and help heal wounds.

  11. Hemoglobin • Carries oxygen and CO2. gives blood its red color • BLOOD TYPES • A, B, AB, O • You CANNOT change your blood type.

  12. Diseases of Blood • Anemia is a blood disorder of the red blood cells in which tissues can’t get enough oxygen. • Loss of large amounts of blood • Diet lacking iron or certain vitamins • The production of increased numbers of immature white blood cells is a disease called leukemia. • Medicines, blood transfusions, and bone marrow transplants are treatments.

  13. Section 3- Lymphatic System • Lymph • The water and dissolved substances remaining between cells and diffused into lymphatic capillaries. • Lymph is made up of white blood cells, water, and dissolved substances. • Your lymphatic system collects fluid from body tissue spaces. • Uses skeletal and smooth muslces for movement.

  14. Lymphatic Organs • Lymph nodes, tonsils, thymus, and spleen

  15. Tonsils Thymus Spleen Lymph Nodes

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