- 卵黄囊 luǎnhuángnáng yolk sacyolk sac; a membrane-lined sac that provides nutrients to a developing embryo
- 卵黄管 luǎnhuángguǎn vitelline ductvitelline duct; the narrow tube that connects the yolk sac to the midgut of an embryo
- 卵黄腺 luǎnhuángxiàn vitelline glandvitelline glands or vitellaria in biology
- 总卵黄管 zǒngluǎnhuángguǎn common vitelline duct(flatworm anatomy) the duct formed by the union of vitelline ducts that enters the ootype
