embryonic membranes造句

• The larva emerges, leaving the embryonic membrane inside the egg.
• They do not contribute to the extra-embryonic membranes or the placenta.
• These embryonic membranes and the lack of a larval stage distinguish amniotes from tetrapod amphibians.
• The allantois, along with the amnion and chorion ( other embryonic membranes ), identify humans, and other mammals, as amniotes.
• The embryo, the extra-embryonic membranes, and the placenta are collectively referred to as a conceptus, or the " products of conception ".
• The name refers to the amnion, an embryonic membrane produced during the fetal development of amniotes which serves to transport oxygen into the egg and expel carbon dioxide.
• Some arthropod eggs do not actually have shells, rather, their outer covering is actually the outermost embryonic membrane, the "'choroid "', which serves to proteact inner layers.
• Between 36 and 48 hours after the egg is laid, the egg enters stage 8 of embryogenesis, during which an embryonic membrane and a maxillary, labial lobes, body segmentation, and anus formation occur.
• After 15-25 min of head and abdominal body movement, the terminal body segments and head capsule within the embryo begin to make contact with the embryonic membrane, eventually resulting in rupture and gradual disintegration of the embryonic membrane as contractions continue to occur.
• After 15-25 min of head and abdominal body movement, the terminal body segments and head capsule within the embryo begin to make contact with the embryonic membrane, eventually resulting in rupture and gradual disintegration of the embryonic membrane as contractions continue to occur.