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What is the circulatory system? The circulatory system carries blood and dissolved substances to and from different places in the body. ,[object Object]
  The Heart pumps blood and substances around the body in tubes called blood vessels.,[object Object]
The Heart  Artery to Lungs Artery to Head and Body Vein from Lungs Vein from Head and Body Right Atrium Left Atrium valve Right Ventricle Left Ventricle
Function of the Circulatory System In Respiration: Delivers oxygen to the cells and removes carbon dioxide
Function of the Circulatory System In Nutrition: ,[object Object],[object Object]
Function of the Circulatory System Other Functions Protects body from diseases WBCs ( White Blood Cells) engulf and destroys bacteria, viruses, and other harmful invaders Keeps the body temperature stable Helps carries hormones
3 Types of Blood Vessels ARTERY 	- a blood vessel that  carries blood  from the heart to the body.
3 Types of Blood Vessels 2.	VEIN 	- a blood vessel that carries blood from capillaries toward the heart. 	- Carries blood that contains waste and CO2 Exception pulmonary vein Blood not under much pressure Valves to prevent much gravity pull Venules:  larger than capillaries
3 Types of Blood Vessels 3.	CAPILLARY 	-  a smaller blood vessel connecting arterioles with the ventricles or ventrioles ,[object Object]
Microscopic
Nutrients and gases diffuse here
Walls one cell thick,[object Object]
Red Blood Cell ,[object Object]
 Contains hemoglobin, a molecule specially designed to hold oxygen and carry it to cells that need it.
Can change shape to an amazing extent, without breaking, as it squeezes single file through the capillaries. ,[object Object]

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Circulatory system

  • 1.
  • 2.
  • 3. The Heart Artery to Lungs Artery to Head and Body Vein from Lungs Vein from Head and Body Right Atrium Left Atrium valve Right Ventricle Left Ventricle
  • 4. Function of the Circulatory System In Respiration: Delivers oxygen to the cells and removes carbon dioxide
  • 5.
  • 6. Function of the Circulatory System Other Functions Protects body from diseases WBCs ( White Blood Cells) engulf and destroys bacteria, viruses, and other harmful invaders Keeps the body temperature stable Helps carries hormones
  • 7. 3 Types of Blood Vessels ARTERY - a blood vessel that carries blood from the heart to the body.
  • 8. 3 Types of Blood Vessels 2. VEIN - a blood vessel that carries blood from capillaries toward the heart. - Carries blood that contains waste and CO2 Exception pulmonary vein Blood not under much pressure Valves to prevent much gravity pull Venules: larger than capillaries
  • 9.
  • 11. Nutrients and gases diffuse here
  • 12.
  • 13.
  • 14. Contains hemoglobin, a molecule specially designed to hold oxygen and carry it to cells that need it.
  • 15.
  • 16. Macrophages ‘eat’ and digest micro-organisms .
  • 17.
  • 18. Overview of the Circulatory System