| 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 |
