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Cardiovascular System

Cardiovascular System. Cardiovascular System. Cardio = “heart” Vascular = “vessels”. Circulatory ( Cardiovascular) System. Made up of heart , vessels , and blood. Three Types of Blood Vessels. Arteries - move blood away from the heart. Three Types of Blood Vessels.

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Cardiovascular System

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  1. CardiovascularSystem

  2. Cardiovascular System • Cardio = “heart” • Vascular = “vessels”

  3. Circulatory (Cardiovascular) System • Made up of heart, vessels, and blood

  4. Three Types of Blood Vessels • Arteries - move blood away from the heart

  5. Three Types of Blood Vessels • Arteries - move blood away from the heart • Veins - move blood toward the heart

  6. Three Types of Blood Vessels • Arteries - move blood away from the heart • Veins - move blood toward the heart • Capillaries - microscopic blood vessels that connect arteries and veins

  7. Functions of the Blood • Carries oxygen from lungs to all body cells and removes carbon dioxide from the cells White blood cell Red blood cell

  8. Functions of the Blood • Red blood cells – contain hemoglobin which combines with oxygen. These cells deliver oxygen to the body. • Their disc shape helps them squeeze through vessels. • They wear out and are replaced every four months. New red blood cells are produced in the bone marrow. Red blood cell

  9. Functions of the Blood • Carries waste products of cell activity to the kidneys to be removed from the body

  10. Functions of the Blood • Transports nutrients from the digestive system to body cells

  11. Functions of the Blood • Materials in the blood help fight infection and heal wounds (white blood cells and platelets). White blood cell: fights foreign invaders Platelets: help blood form clots

  12. Functions of the Blood • White blood cells – are generally larger than red blood cells. They can move out of your blood through the capillary walls into tissue fluid and lymph. • They then travel around fighting disease. The white blood cells last 13–20 days, after which they are destroyed by the lymphatic system. White blood cell: fights foreign invaders

  13. Functions of the Blood • Platelets – are irregularly-shaped, colorless bodies that wear out within 5–10 days • Their sticky surface lets them, along with calcium, vitamin K, and fibrinogen, form clots to stop bleeding. Platelets: help blood form clots

  14. 0 Which two substances does the blood transport away from body cells? • Oxygen & carbon dioxide • Carbon dioxide & waste • Nutrients & waste • Oxygen & nutrients

  15. 0 What parts of the blood help fight off disease and heal injuries? • White blood cells & platelets • Red blood cells & platelets • White blood cells & red blood cells • White blood cells & plasma

  16. 0 Which is not a function of the circulatory system? • Carry nutrients & oxygen to body cells • Carry carbon dioxide & waste away from body cells • Attack disease-causing bacteria • Produce chemicals that control body processes

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