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11.23: Heart

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

atrium

Small, thin-walled chamber at the top of the heart where the blood first enters.

valve

Structure in the heart that prevents back-flow and keeps the blood flowing in one direction.

ventricle

Muscular V-shaped chamber that pumps blood out of the heart.

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Description
Difficulty Level:
At Grade

Concept Nodes:

Grades:
7 , 8
Date Created:
Nov 29, 2012
Last Modified:
Aug 30, 2016
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SCI.LSC.931.1.L.1