rectal veins造句
造句与例句
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- Veins superior to the middle rectal vein in the colon and rectum drain via the portal system to the liver.
- Veins inferior, and including, the middle rectal vein drain into systemic circulation and are returned to the heart, bypassing the liver.
- The superior rectal vein leaves the lesser pelvis and crosses the left common iliac vessels with the superior rectal artery, and is continued upward as the inferior mesenteric vein.
- It's difficult to see rectal veins in a sentence. 用rectal veins造句挺难的
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