BIO 2135 Study Guide - Final Guide: Notochord, Nostril, Cephalochordate
Document Summary
Food is propelled into the system with water, little profierations in the gut propel the water through the gill pores. The gill slits are were the water exits in order to oxidate it. The stomocord is a cardinaloginous little rod, and is formed by the gut and this is why these animals are part of the chordate phylum. The heart viscle is a heart but rather is a structure that pushes against the stomocord to push blood through. The pressure of the blood and causes a leakage into the membrane wall into the glomerulus. Thing that evolve to himan, notochord post anal segmentation, pharynx with endostole and ventral heart. Whats new in chordate, the notochord, the dorsal tubular nerve chord Pharyngeal gill slits: the gill slits appear in jawless chordates and the water jus moves out the gills and they are supported by cardilaginous rods that evolve to become jaws.
