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13 Cards in this Set
- Front
- Back
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Name the blood vessel that takes blood from cells back to the heart.
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vein
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In the heart, what are the lower chambers called?
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ventricle
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When you hold your breath, why does the brain tell you to breath?
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carbon dioxide builds up in the blood.
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The transportation system of the body is the______________.
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circulatory system
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How does food move through the esophagus?
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Rings of muscles squeeze food down the esophagus.
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What surrounds the wall of each air sac like a web?
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capillaries
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When does digestion begin?
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when teeth start to grind food
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What do the liver and pancreas do?
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send chemicals to the small intestine to help digest food
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What provides more surface area in the small intestine to absorb food?
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villi
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The urinary system does what for the body?
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removes waste
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What happens to white blood cells when you get sick?
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they greatly increase in number
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What system includes the trachea, diaphragm, bronchioles, and air sacs?
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respiratory system
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How do the urinary and respiratory system work together?
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The urinary system cleans the blood in the circulatory system. On the way back to the heart, blood passes through the kiddneys in the urinary system. The kidneys clean the blood and control the amount of sald, water and other substances in the blood.
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