BIOL 1030 Study Guide - Midterm Guide: Tube Feet, Keratin, Gene Duplication

• School: University of Manitoba
• Department: Biological Sciences
• Course: BIOL 1030
• Professor: Kevin G.Scott

Document Summary

Has ve rows of tube feet, some around the mouth as feeding tentacles. 34. 1 - chordates have notochord and a dorsal hollow nerve cord. Vertebrates are a part of phylum chordata. Main characters of chordates are: notochord, a dorsal hollow nerve cord, pharyngeal slits or clefts, muscular post-anal tail. Present in all embryos as well as some adults. It is a longitudinal exible rod, located between the digestive tube and the nerve cord. Composed of large uid lled cells encased in sti brous tissue. It provides skeletal support, and provides a rm but exible surface against muscles can work during swimming. In most vertebrates a more complex jointed skeleton develops around ancestral notochord. In humans it is reduced as we develop and forms apart od the gelatinous disk meter the vertebrae. It develops into the central nervous system, brain and spinal cord. Digestive tube extends from mouth to anus. The region just posterior to the mouth is the pharynx.