Blood vessels are a transportation system to deliver…. Blood vessels are a transportation system to deliver…. Oxygen Oxygen Carbon Dioxide Carbon Dioxide.

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Blood vessels are a transportation system to deliver…. Blood vessels are a transportation system to deliver…. Oxygen Oxygen Carbon Dioxide Carbon Dioxide Glucose Glucose

ARTERIES ARTERIES VEINS VEINS CAPILLARIES CAPILLARIES

Blood vessel that carries blood AWAY from heart Blood vessel that carries blood AWAY from heart All arteries carry oxygen- rich blood except the pulmonary artery. All arteries carry oxygen- rich blood except the pulmonary artery. Largest artery is called the AORTA Largest artery is called the AORTA Arteries have 3 layers. Arteries have 3 layers. Middle layer is thick muscle Middle layer is thick muscle Outer layer is an elastic allowing vessels to expand and relax in time to pumping. Outer layer is an elastic allowing vessels to expand and relax in time to pumping.

Blood vessel which carries blood TO the heart. Blood vessel which carries blood TO the heart. All veins carry oxygen poor blood except the pulmonary vein. All veins carry oxygen poor blood except the pulmonary vein. Veins are made up of 3 layers. Veins are made up of 3 layers. Middle layer is thin muscle. Middle layer is thin muscle. Muscle in veins contract to push blood back to the heart. Muscle in veins contract to push blood back to the heart. Veins have valves that prevent blood from flowing backwards. Veins have valves that prevent blood from flowing backwards.

TINY blood vessels CONNECTING arteries and veins. TINY blood vessels CONNECTING arteries and veins. The blood is a MIX of RICH AND POOR blood. The blood is a MIX of RICH AND POOR blood. The place of oxygen and carbon dioxide exchange between blood and cells The place of oxygen and carbon dioxide exchange between blood and cells Capillaries are made of 1 thin layer to make transportation of oxygen and carbon dioxide easy. Capillaries are made of 1 thin layer to make transportation of oxygen and carbon dioxide easy.

Color the artery red. (oxygen rich) Color the artery red. (oxygen rich) Color the vein blue. (oxygen poor) Color the vein blue. (oxygen poor) Color the capillary purple. (a mix/transition of both rich and poor blood) Color the capillary purple. (a mix/transition of both rich and poor blood)