Cloaca (embryology)

（重定向自Ectodermal cloaca）

The cloaca is a structure in the development of the urinary and reproductive organs.

The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the growth and flexure of the tail-end of the embryo, the body-stalk, with its contained allantoic tube, is carried forward to the ventral aspect of the body, and consequently a bend is formed at the junction of the hind-gut and allantois.

单词	Ectodermal cloaca
释义	Ectodermal cloaca 英语百科 Cloaca (embryology) （重定向自Ectodermal cloaca） The cloaca is a structure in the development of the urinary and reproductive organs. The hind-gut is at first prolonged backward into the body-stalk as the tube of the allantois; but, with the growth and flexure of the tail-end of the embryo, the body-stalk, with its contained allantoic tube, is carried forward to the ventral aspect of the body, and consequently a bend is formed at the junction of the hind-gut and allantois.
随便看	varnish kettle varnish lacquer varnishless varnishlike varnish linseed oil varnish makers and painsters naphtha varnish makers and painters naphtha varnish makers naphtha varnish oil varnish over varnish paint varnish paper varnish,periodontal varnish poisoning varnish pot varnish rash varnish remover varnish resin varnish rubbing varnish shop varnish spray gun varnish spraying varnish stain varnish stick varnish system