Blood vessels and blood cells
Cashar 8 / 12
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Natiijada casharka
I can explain the structure and function of different types of blood vessels and blood cells in the circulatory system.
Muuji qoraalka
Arteries carry blood away from the heart at high pressure. They have thick walls and a smaller lumen.
Veins carry blood back to the heart. They have thinner walls and contain valves to prevent backflow.
Capillaries facilitate the exchange of gases, nutrients, and waste products between blood and tissues.
Red blood cells transport oxygen, carbon dioxide and nutrients.
White blood cells fight infections whilst platelets enable blood clotting and plasma makes up the main blood volume.
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