Which of the following statements about the left ventricle is/are true? a. blood entering the left ventricle is usually quite low in its oxygen concentration. b. blood exits the left ventricle through the aortic valve into the aorta. c. the left ventricle contracts at the same time as the left atrium. d. the wall of the left ventricle is very thin but also is very strong. e. both b and d are correct.
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Which of the following statements about the left ventricle is/are true? a. blood entering the left...
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