Normally, oxygen-poor( blue) blood returns to the right atrium from the body, travels to the right ventricle, then is pumped through the pulmonary artery into the lungs where it receives oxygen.
英
美
- 正常情况下,贫氧血(色)全身回到右心房,进入右心室,然后被泵出经过肺动脉进入肺,在这里接受氧气。