ఉల్బం: కూర్పుల మధ్య తేడాలు

MeshName = Amnion |

MeshNumber = A10.615.284.277 |

'''ఉల్బం''' ('''amnion''') ఒక జీవశాస్త్రంలో [[ఉల్బ కుహరం]] ను తయారుచేసే త్వచము లేదా [[పొర]]. is a [[Biological membrane|membrane]] building the [[amniotic sac]] that surrounds and protects an [[embryo]]. It is developed in [[reptile]]s, [[bird]]s, and [[mammal]]s, which are hence called “[[Amniote|Amniota]]”; but not in [[amphibian]]s and [[fish]] ([[Ichthyopsida]]), which are consequently termed “Anamniota”. The primary role of this is the protection of the embryo for its development. It stems from parts of the [[mesoderm]] on the outer side and the [[ectoderm]] on the inner side.