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A hollow part or cavity in an organ.

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It receives and holds blood from the veins of the body

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The membrane-lined cavity behind the nose and mouth, connecting them to the esophagus

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It prevents the backward flow of blood.

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It's the maintenance of the constant internal enviorment when outside conditions change.

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The trachea splits  into two branches called what ?

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The trachea splits  into two branches called what ?

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Bronchi

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A dome-shaped muscle below the lungs.

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Blood vessels

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The larynx is connected to a large the what ?

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The larynx is connected to a large the what ?

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Trachea

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An oxygen-carring protein.

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Disk- shaped cells that do not have a nucleus.

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They help keep you healthy by fighting pathogens such as bacteria and virusus.

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Tiny pieces of larger cells found in bone marrow.

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The fluid part of the blood is called what ?

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The fluid part of the blood is called what ?

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Plasma

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Carry oxygen-poor blood back to the heart.

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It carries oxygen-rich blood away from the heart.

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A little liquid is forced out of the thin walls of the tiniest blood vessels call what ?

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A little liquid is forced out of the thin walls of the tiniest blood vessels call what ?

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Capillaries

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What makes up the cardiovascular system ?

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What makes up the cardiovascular system ?

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Your heart, blood, and blood vessels.

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A fluid that carries gases, nutrients, and, wastes through the body.