Cardiovascular System 7th Grade Science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the parts of the cardiovascular system? | blood
blood vessels
heart
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| What are the 4 components of blood? | red blood cells (RBCs)
white blood cells (WBCs)
plasma
platelets
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| Fluid that carries gases, nutrients, and wastes through the body -made up of platelets, plasma, WBCs, and RBCs | blood
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| a component of blood; mixture of water, minerals, nutrients, sugars, proteins, and other substances | plasma
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| a component of blood; tiny pieces of larger cells found in bone marrow, only last 5-10 days, help blood to clot | platelets
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| keep body healthy by fighting pathogens (bacteria and viruses), form antibodies (chemicals that identify pathogens) | white blood cells (WBCs)
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| disc-shaped cells that do not have a nucleus, bring oxygen to every cell in body | red blood cells (RBCs)
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| oxygen-carrying protein found in red blood cells | hemoglobin
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| blood travels through the whole circulatory system through these | blood vessels
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| type of blood vessels that carry blood AWAY from the heart | arteries
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| tiny blood vessels that allow exchanges between body cells and blood | capillaries
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| type of blood vessels that carries blood back to heart | veins
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