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Definitions of atrium
  1. noun
    any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
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  2. noun
    the central area in a building; open to the sky
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Definition that contains atrium
  • ventricle a chamber of the heart that receives blood from an atrium and pumps it to the arteries
  • auricle a small conical pouch projecting from the upper anterior part of each atrium of the heart
  • heart ventricle a chamber of the heart that receives blood from an atrium and pumps it to the arteries
  • left ventricle the chamber on the left side of the heart that receives arterial blood from the left atrium and pumps it into the aorta
  • atrial auricle a small conical pouch projecting from the upper anterior part of each atrium of the heart
  • tricuspid valve valve with three cusps; situated between the right atrium and the right ventricle; allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts
  • vena pulmonalis any of four veins that carry arterial blood from the lungs to the left atrium of the heart
  • postcava receives blood from lower limbs and abdominal organs and empties into the posterior part of the right atrium of the heart; formed from the union of the two iliac veins
  • auricular appendage a pouch projecting from the top front of each atrium of the heart
  • right ventricle the chamber on the right side of the heart that receives venous blood from the right atrium and pumps it into the pulmonary trunk
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