16.1 Science Vocab
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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| cardiovascular system | consists of the heart, blood vessels, and blood; also called the circulatory system.
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| heart | a hollow, muscular organ that pumps blood throughout the body.
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| atrium | upper chamber that receives blood that comes into the heart.
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| pacemaker | a group of heart cells that send out signals that make the heart muscle contract.
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| ventricle | lower chamber that pumps blood out of the heart.
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| valve | a flap of tissue that prevents blood from flowing backward.
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| artery | blood vessels that carry blood away from the heart.
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| capillary | tiny, narrow vessels where substances are exchanged between the blood and body cells.
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| vein | blood vessels that carry blood back to the heart.
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| aorta | the largest artery in the body.
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| coronary arteries | carry blood to the heart itself.
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| pulse | the alternating expansion and relaxation of the artery wall.
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| diffusion | the process by which molecules move from an area of higher concentration to an area of lower concentration.
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| blood pressure | a force exerted by blood against the walls of blood vessels.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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