The commissural fibres are continued downwards to meet the ventral chord, but their junction with the latter structure is not effected till late in embryonic life.
The yolk-sack persists during the whole of embryonic life, and in the majority of Elasmobranch embryos there arises within the body walls an outgrowth from the umbilical canal into which a large amount of the yolk passes.
The middle portion of the alimentary tract is the last to be closed in since it remains till late in embryonic life as the umbilical or vitelline canal, connecting the yolk-sack with the alimentary cavity.
After the period of embryonic life is over, the stimulus of nutrition is still sufficient for some of these body-cells.
This process takes place during the first two or three months of embryonic life.
The head-kidney is developed from the anterior end of this canal, the opening of which remains in Teleostei single and closes early in embryonic life, but becomes in Amphibia divided into two, three, or four openings.
A curious point which has turned up in the course of my investigations is the fact that for a considerable period of embryonic life a part of the oesophagus remains quite solid and without a lumen.
The labium is much as in that of Perla, being broad and short, with a distinct median suture, indicating its former separation in embryonic life into a pair of appendages.
The spring consists of a pair of three-jointed appendages, with the basal joints soldered together early in embryonic life, while the other two joints are free, forming a fork.
Inversely, in the course of embryonic life itself (especially when the embryo lives freely in the form of a larva), many of the acts accomplished must be referred to instinct.
The two supra-oesophageal ganglia remain disconnected on the dorsal side till quite the close of embryonic life.
This ridge is at first identical in the two sexes, and arises at an early period of embryonic life.
According to Newport fresh segments are added in post-embryonic life by successive budding from a blastema between the penultimate segment and that in front of it.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "embryonic life" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
