WebThe chordates are named for the notochord, which is a flexible, rod-shaped structure that is found in the embryonic stage of all chordates and in the adult stage of some chordate species. It is located between the digestive tube and the nerve cord, and provides support through the length of the body. Web1. having vertebrae; having a segmented backbone. 2. belonging or pertaining to the Vertebrata, a subphylum of chordate animals having an internal skeleton of bone or cartilage that includes a braincase and a spinal column, and comprising mammals, birds, reptiles, amphibians, and fishes. n. 3. a vertebrate animal.
Manual of Internal Fixation in the Cranio-Facial Skeleton eBay
WebThese five synapomorphies include a notochord, dorsal hollow nerve cord, endostyle or thyroid, pharyngeal slits, and a post-anal tail. The name “chordate” comes from the first of these synapomorphies, the notochord, … WebMar 28, 2024 · In chordates the main nerve cord is single and lies above the alimentary tract, while in other phyla it is paired and lies below the gut. Cephalochordates and vertebrates are segmented, as are the annelids … how to add data to a scatter plot in excel
Craniates - Crainata - the Animal Encyclopedia
Webchordate , Any member of the phylum Chordata, which includes the most highly evolved animals, the vertebrates, as well as the marine invertebrate cephalochordates ( see amphioxus) and tunicates. All chordates, at some time in their life cycle, possess a dorsal supporting rod (notochord), gill slits, and a dorsal nerve cord. WebMar 12, 2016 · These animals have a true vertebral column and internal skeleton, allowing a completely different distribution of muscle attachment points to be used for movement. The members of subphylum Vertebrata … WebFeb 5, 2024 · All craniates have an internal skeleton, also called an endoskeleton. The endoskeleton is made up of either cartilage or calcified bone. All craniates have a circulatory system that consists of arteries, … how to add data to dataverse