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 |