BIOL 1021 Lecture Notes - Lecture 3: Deuterostome, Chondrichthyes, Cartilage

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1021
• Professor: Scott Kevin

Document Summary

Multiple axis to use as a map position when talking about the animal. This allows to integration. ie. squid can tell when something dangerous is touching it or if it"s food touching it. Fate of the blastopore: yellow tube is the gut of this embryo. Clade protostomia (first opening that developed becomes the mouth. All have a unique system-the water vascular system. Each tube is attached to ambula which is filled with water. Work on the idea that water can be pushed out, which allows them to attach to the surface. Sea cucumbers have small microscopic remmenents of the skeleton. Dorsal hollow nerve cord. (top yellow) all other animals have a solid nerve chord. Most other animals, anus is at the end of the animal. Many of the characters are lost in adult animals but not chordates. The larvae looks like tadpoles but they don"t grow into frogs. It then land and set itself into the ground.