Neurulation • Neurulation is the formation of the vertebrate nervous system in embryos. • The notochord induces the formation of the CNS by signaling the ectoderm above…

1. Vertebrates 2. Chordates have a notochord and a dorsal, hollow nerve cord 3. Notochord • The notochord is a longitudinal, flexible rod between the digestive tube and…

AP Biology Mrs. Hennings Stations 10 & 11 Animal Diversity Treasure Hunt Half a billion years of backboneâ¦.. Vertebrates: named after vertebrae- a series of bones…

A hypothetical phylogeny of chordates Derived Characters of Chordates All chordates share a set of derived characters Although some species possess some of these traits only…

Chapter 34 Vertebrates A. Invertebrate Chordates and the Origin of Vertebrates  The vertebrates belong to one of the two major phyla in the Deuterostomia, the chordates.…

3/28/05 1st after spring break Phylum Chordata Fig. 34.1 4 unifying anatomical features of chordates Notochord Dorsal hollow nerve cord Fig. 34.2 Pharyngeal slits Muscular,…

A hypothetical phylogeny of chordates Derived Characters of Chordates All chordates share a set of derived characters Although some species possess some of these traits only…