18. 成人右心房(right atrium)與左心室(left ventricle )分別接受何處流入的血液？
①左心房(left atrium)
②右心室(right ventricle )
③肺靜脈( pulmonary vein)
④上腔靜脈(superior vena cava )

(A) ④與①
(B) ②與①
(C) ②與③
(D) ④與③

18. 成人右心房(right atr...