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Where are the cells that make up the sinoatrial node, or pacemaker, located? a. right atrium c. right ventricle b. left atrium d. left ventricle
The SA Node is located in the right atrium of the heart
Expert answered|xgabriellex|Points 476|
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Asked 4/26/2013 1:17:10 PM
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Which of the following pathways is the largest of the circulatory system? a. systemic circulation c. lymphatic circulation b. pulmonary circulation d. coronary circulation
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The immune response is triggered by antibodies. True or false?
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