★ Human Organ System Quiz
Which organ system provides gas exchange between your blood and the air?
A. Musculoskeletal system
B. Circulatory system
C. Respiratory system
D. Nervous system
Preview next quiz:
Where is the first place in the heart that blood flows through?
A. Superior and inferior vena cava
B. Pulmonary artery
C. Tricuspid valve
D. Left atrium
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