心外膜; 鳃囊管
Epicardium \Ep`i*car"di*um\, n. [NL., fr. Gr. 'epi` upon + ? heart.] (Anat.) That of the pericardium which forms the outer surface of the heart; the cardiac pericardium.
epicardium n : the innermost of the two layers of the pericardium [syn: {visceral pericardium}] [also: {epicardia} (pl)]