notochord

How To Use notochord In A Sentence

• First was the relatively simple activation of motoneuron fates by sonic hedgehog from the notochord and floorplate and retinoic acid from the paraxial mesoderm.
• The foregut is here more inclosed, and the notochord, _nt_, having separated from the entoderm, _en_, is seen as a distinct layer of cells extending from the foregut to the blastopore. Development of the Digestive Canal of the American Alligator
• Many tunicates have a larva that is free-swimming and exhibits all chordate characteristics: it has a notochord, a dorsal nerve cord, pharyngeal slits, and a post-anal tail.
• Thus the notochord, the brain, the eyes, the heart, appear earlier in the ontogenetic than in the phylogenetic series, while, on the other hand, the septum of the auricles appears in the development of the higher Vertebrates before the ventricular septum, which is undoubtedly a reversal of the phylogenetic order. Form and Function A Contribution to the History of Animal Morphology
• Concomitantly with the development of this canal, there is found, immediately beneath it, a little gelatinous rod enclosed in a membraneous envelope, and called the notochord, or chorda dorsalis. The Common Frog
• A similar pair of parachordal cartilages develop posteriorly from mesoderm, flanking the notochord.
• Thus the notochord is the necessary forerunner of the vertebral column, cartilage the precursor of bone. Form and Function A Contribution to the History of Animal Morphology
• The foregut is here more inclosed, and the notochord, _nt_, having separated from the entoderm, _en_, is seen as a distinct layer of cells extending from the foregut to the blastopore. Development of the Digestive Canal of the American Alligator
• That a notochord should develop out of the archenteric wall because a supporting axis would be beneficial to the animal may be a teleological assumption, but it is at the same time an evolutional heresy. Form and Function A Contribution to the History of Animal Morphology
• A notochord is a rope of nervous connection which branches into the trunk nerves of the body. Neutron Star