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Boundless Biology
The Circulatory System
Mammalian Heart and Blood Vessels
Biology Textbooks Boundless Biology The Circulatory System Mammalian Heart and Blood Vessels
Biology Textbooks Boundless Biology The Circulatory System
Biology Textbooks Boundless Biology
Biology Textbooks
Biology
Concept Version 9
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Structures of the Heart

Circulatory System

Circulatory System

The mammalian circulatory system is divided into three circuits: the systemic circuit, the pulmonary circuit, and the coronary circuit. Blood is pumped from veins of the systemic circuit into the right atrium of the heart, then into the right ventricle. Blood then enters the pulmonary circuit and is oxygenated by the lungs. From the pulmonary circuit, blood re-enters the heart through the left atrium. From the left ventricle, blood re-enters the systemic circuit through the aorta and is distributed to the rest of the body. The coronary circuit, which provides blood to the heart, is not shown.

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "OpenStax College, Biology. December 3, 2013."
    http://cnx.org/content/m44805/latest/?collection=col11448/latest OpenStax CNX CC BY 3.0.

Related Terms

  • aorta
  • inferior vena cava
  • superior vena cava
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