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CVA Lab Terms #1
AHHHHHHHHH
| Term | Definition |
|---|---|
| Acorn worms are | hemicordate |
| Acorn worm phylum | hemicordata |
| acorn worm class | enteropneusta |
| Proboscis | The head portion of the worm |
| Collar | medium section behind proboscis |
| Trunk | final body section resembling a tail |
| Pharynx with Pharyngeal Slits (C) | carries food to the esophagus and air to the larynx |
| Branchial Pore | exit of water from branchial pouch to outside |
| Mouth | where the organism intakes food |
| Buccal Cavity | oral cavity within the mouth |
| Dioecious | males and females are separate organisms |
| Tunicate is | Urochordate |
| tunicate phylum | chordata |
| tunicate subphylum | urochordata/tunicata |
| Post Anal Tail (C) | tail occurring after the anal opening |
| Notochord (C) | elastic, cartilaginous rod like structure that provides support |
| Adhesive Organs (Papillae) | |
| Branchial Basket | cartilaginous structure supporting gills in protochordates |
| Endostyle (C) | early version/homologous to thyroid organ |
| Incurrent Siphon | hole which is on the ventral side that intakes water |
| Excurrent Siphon | hole on dorsal side which expels water |
| Tunic | fleshy outer covering of tunicata |
| Atrium | space inbetween branchial basket and outer tunic |
| Monoecious | male and female organs exist within one organism |
| Lancelet/Amohioxus is | Cephalochordate |
| Lancelet phylum | chordata |
| lancelet subphylum | cephalochordata |
| Atriopore | hole that expels fluid (non food) waste from an organism |
| DHNC (C) | tube that develops into the central nervous system |
| Caudal Fin | postanal tail that appears like a fin |
| Buccal Cirri | projections from organism's mouth that help filter sediment when feeding |
| Wheel organ | organ that creates the flow of water that allows filter feeders to filter through the water for nutrients |
| Velum | covering of wheel organ (?) |
| Myomeres | blocks of skeletal muscle found on the top of our organisms. Appears bristle like |
| Ocellus | light sensory organs found on the dorsal hollow nerve cord (little black dots) |
| Anus | where food waste is expelled on an organism |
| Myosepta | separates the blocks of skeletal muscle |
| Dorsal Fin | a medial, unpaired fin that is located on the midline of the backs of some aquatic vertebrates |
Created by:
emma.boc
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