完成了物质交换的脱氧血从毛细血管汇入小静脉，然后再经由大静脉返回心脏。
Capillaries rejoin into larger venules , which unite to form veins, which carry blood back to the heart.
右心室壁未见到动静脉吻合，但观察到与心腔直接相通的心最小静脉和心肌窦状隙。
No A-V anastomosis could be seen, yet thebesian vessels and myocardial sinusoids directly opened into ventrical chamber could be found.
胰尾多见1 ~ 4条小静脉，大都汇入脾静脉。
胰尾多见1 ~ 4条小静脉，大都汇入脾静脉。
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