28 右內胸動脈(right internal thoracic artery)來自於下列何項﹖
(A)左總頸動脈(left common carotid a.)
(B)頭臂動脈幹(branchiocephalic trunk)
(C)右鎖骨下動脈(right subclavian a.)
(D)升主動脈(ascending arota)

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統計： A(0), B(5), C(7), D(0), E(0) #865861