AP Bio 7 - Animals Phylum Chordata share a set of derived...

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10/5/09 Animals Phylum Chordata share a set of derived characters Some only exhibit traits during embryonic development Four key characters of chordates: Notochord Dorsal, hollow nerve cord Pharyngeal slits or clefts Muscular, post-anal tail
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10/5/09 LE 34-3 Pharyng eal slits or clefts Mout h Bra in Dorsal, hollow nerve cord Notoch ord Muscl e segm ents Muscula r, post- An us
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10/5/09 Notochord longitudinal, flexible rod between the digestive tube and nerve cord provides skeletal support In most vertebrates, jointed skeleton develops, and the adult retains only remnants of the embryonic notochord
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10/5/09 Dorsal, hollow nerve cord develops from a plate of ectoderm that rolls into a tube dorsal to the notochord develops into the central nervous system Brain spinal cord
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10/5/09 Pharyngeal slits or clefts In most chordates, develop into slits that open to the outside of the body Functions of pharyngeal slits: Suspension-feeding structures in many invertebrate chordates Gas exchange in aquatic vertebrates Develop into parts of the ear, head, and neck in terrestrial vertebrates
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This note was uploaded on 02/28/2009 for the course BIOLOGY Bio 101 taught by Professor Lancer during the Spring '09 term at Riverside Community College.

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AP Bio 7 - Animals Phylum Chordata share a set of derived...

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