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Java Games: Flashcards, matching, concentration, and word search. |
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30.3 The Heart and Circulation
The heart is a muscular pump that moves the blood through two pathways.
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| atrium | small chamber in the human heart that receives blood from the veins (plural: <i>atria</i>) |
| ventricle | large chamber in the heart that receives blood from an atrium and pumps blood to the rest of the body |
| valve | flap of tissue that prevents blood from flowing backward into a blood vessel or heart chamber |
| pacemaker | collection of cells that stimulates the pumping action of the heart |
| pulmonary circulation | collection of blood vessels that carries blood between the lungs and heart |
| systemic circulation | collection of blood vessels that carries blood between the heart and the rest of the body, except for the lungs |
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BVNW |
Blue Valley Northwest High School |
| Overland Park, KS |
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