1)vertebrae | small bones making up the backbone |
2)cranium | bony protection covering the brain |
3)agnatha | class containing hagfish & lampreys |
4)chondrichthyes | class containing sharks & rays |
5)osteichthyes | class of bony fish |
6)arches | bony supports for the gills |
7)lateral | line system that detects vibrations in the water |
8)hagfish | jawless marine fish that feed on dead fish |
9)lamprey | jawless and sometimes parasitic fish |
10)external | fertilization in jawless fish |
11)cartilage | flexible protein material in the skeleton of sharks |
12)placoid | toothlike scales on sharks |
13)pectoral | fins on sharks that appear like wings of an airplane |
14)olfactory | responsible for the shark’s acute sense of smell |
15)ray | flattened bat like fish with a skeleton of cartilage |
16)slits | openings into the gills on cartilagenous fish |
17)claspers | modified pelvic fins of male sharks used to transfer sperm |
18)perch | example of a ray finned fish |
19)operculum | bony covering over the gills of bony fish |
20)caudal | tail fin |
21)liver | organ that secretes bile to digest fats |
22)arteries | carry blood away from the heart |
23)veins | return blood to the heart |
24)atrium | heart chamber that receives blood bck form the heart |
25)ventricle | pumping chamber of the heart |
26)countercurrent | movement of blod across a fish’s gills for maximum absorption of oxygen |
27)buoyancy | property that the swim bladder gives to a fish |
28)cerebrum | forebrain |
29)cerebellum | hindbrain |
30)spawing | reproductive behavior where fish build nests and lay their eggs |