Which Structure or Region in a Four-Chambered Vertebrate Heart Contains

question 30

Multiple Choice

Which structure or region in a four-chambered vertebrate heart contains blood with the lowest O₂ concentration?

• A) Pulmonary artery
• B) Pulmonary vein
• C) Left atrium
• D) Aorta
• E) Arteriole end of a systemic capillary

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