neurenteric

The medullary canal continues for a short distance (about fifteen sections of five microns thickness) posterior to the opening of the neurenteric canal.

Development of the Digestive Canal of the American Alligator C. M. [Illustrator] Reese

As is shown in figure 3D, the neurenteric canal, _nc_, still opens ventrally, though the medullary canal, _mc_, has now no dorsal opening to the exterior.

Development of the Digestive Canal of the American Alligator C. M. [Illustrator] Reese

After the coalescence of the neural folds over the anterior end of the primitive streak, the blastopore no longer opens on the surface but into the closed canal of the neural tube, and thus a transitory communication, the neurenteric canal, is established between the neural tube and the primitive digestive tube.

I. Embryology. 6. The Neural Groove and Tube 1918

The majority are developed in relation to the communication which exists in the embryo between the neural canal and the alimentary tract -- the post-anal gut or neurenteric canal.

Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893

# -- The _post-anal dimple_, a shallow depression frequently observed over the tip of the coccyx, may be due to traction exerted on the skin at this spot by the remains of the neurenteric canal, or by the caudal ligament of

Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893

These medullary swellings join together over the furrow, and form a tube; in this case, again, the neural or medullary tube is at first open in front, and connected with the primitive gut behind by the neurenteric canal.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

In the amniotes this original curved form of the neurenteric canal cannot be found at first, because here the primitive mouth travels completely over to the dorsal surface of the gastrula, and is converted into the longitudinal furrow we call the primitive groove.

The Evolution of Man — Volume 1 Ernst Heinrich Philipp August Haeckel 1876

Again, we find the neurenteric canal in just the same form and situation in the amphibia.

The Evolution of Man — Volume 1 Ernst Heinrich Philipp August Haeckel 1876

The medullary tube would be originally a chemical sensory organ, a dorsal olfactory tube, taking in respiratory-water and food by the neuroporus in front and conveying them by the neurenteric canal into the primitive gut.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876

In the earlier stages the alimentary tube is found to be entirely closed, after the closing of the primitive mouth; it only communicates behind by the neurenteric canal with the medullary tube.

The Evolution of Man — Volume 2 Ernst Heinrich Philipp August Haeckel 1876