Search:notochord -> NOTOCHORD
notochord
n o t o c h o r d hex:#110;#111;#116;#111;#99;#104;#111;#114;#100;
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- Notochord - n. - An elastic cartilagelike rod which is developed beneath the medullary groove in the vertebrate embryo, and constitutes the primitive axial skeleton around which the centra of the vertebrae and the posterior part of the base of the skull are developed; the chorda dorsalis. See Illust. of Ectoderm.
- Notochordal - a. - Of or pertaining to the notochord; having a notochord.
- Vertebrata - n. pl. - One of the grand divisions of the animal kingdom, comprising all animals that have a backbone composed of bony or cartilaginous vertebrae, together with Amphioxus in which the backbone is represented by a simple undivided notochord. The Vertebrata always have a dorsal, or neural, cavity above the notochord or backbone, and a ventral, or visceral, cavity below it. The subdivisions or classes of Vertebrata are Mammalia, Aves, Reptilia, Amphibia, Pisces, Marsipobranchia, and Leptocardia.
- Cephalostyle - n. - The anterior end of the notochord and its bony sheath in the base of cartilaginous crania.