ampioxus
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Transcript of ampioxus
7/24/2019 ampioxus
http://slidepdf.com/reader/full/ampioxus 1/1
• Notochord: dorsal bar placed under the nervous system with a
skeletal function.
• Epineuria: dorsal position of nerve cord.
• Endostyle: ventral groove in the pharynx that produce mucus to
catch food and also produce iodized compounds. This gives thyroid.
• Caudal fn: locomotive appendix.
General anatomy of a cephalochordate. 1. brain-like blister 2. notochord 3. dorsal nerve cord 4. post-anal tail 5.
anus 6. food canal 7. blood system . abdominal porus !. overpharyn" lacuna 1#. $ill%s slit 11. pharyn" 12. mouth
lacuna 13. mimosa 14. mouth $ap 15. $onads &ovary'testicle( 16. li$ht sensor 17. nerves 1. abdominal ply 1!.
hepatic caecum 2#. s)im bladder 21. lateral line &*mat$e+ ,iotr icha /a)orski 0 reative ommons(
Amphioxus lives buried in sand seafloor of the shallow and coastal waters and in
estuaries all over the world.