Lab Quiz 1: Bones Skin and Scales

• Exoskeleton: Derived from the ectoderm, this acts as an external skeletal support and as a protective layer on the body. It may be composed of enamel, dentine, and dermal bone
• What germ layer is the exo skeleton derived from?

  Ectoderm
• What are some compositional materials of an exoskeleton in fish?

  • Enamel
  • Dentine
  • Dermal Bone
• Endoskeleton: Derived from the meso derm, this acts as internal support and protection for they body. It may be composed of cartilage, bone, or both
• What germ layer is the endoskeleton of a fish derived from?

  mesoderm
• What are some compositional materials of a fish's endoskeleton?

  Cartilage

  Bone

  Both
• What is this part of a perch skeleton called?

  Cranial skeleton

  
• What is this part of a perch skeleton called?

  Post Cranial

  
• What is this part of a perch skeleton called?

  Caudial skeleton

  
• What parts of a perch fish make the cranial skeleton?

  Skull
• What parts of a perch fish make the axial skeleton?

  Vertebrae, dorsal fin, and ribs
• What parts of a perch fish make the caudal skeleton?

  The tail
• What parts of a perch fish make up the appendicular skeleton?

  Paired fins

  Pelvic girdles

  Pectoral girdles
• What part of a perch fish skeleton is this?

  Axial Skeleton

  
• What part of a perch fish skeleton is this?

  Appendicular Skeleton

  
• What are the 2 divisions of the cranial skeleton?

  Neurocranium

  Branchiocranium
• What developmental components make up the neurocranium for bony fish and cartilaginous fish?

  Ethmoid

  Orbital

  Otic

  Basicranial
• What developmental components make up the branchiocranium in bony fish and cartilaginous fish?

  Mandibular arch

  Palatine

  Hyoid

  Opercular

  Branchial
• What part of a blowfin fish skull is this?

  Dentary

  
• What part of a blowfin fish skull is this?

  Angular

  
• What part of a blowfin fish skull is this?

  Supra-Angular

  
• What part of a blowfin fish skull is this?

  Maxillary

  
• What part of a blowfin fish skull is this?

  Supra-Maxillary

  
• What part of a blowfin fish skull is this?

  Lachrymal

  
• What part of a blowfin fish skull is this?

  Nasal

  
• What part of a blowfin fish skull is this?

  Frontal

  
• What part of a blowfin fish skull is this?

  Postfrontal

  
• What part of a blowfin fish skull is this?

  Suborbital

  
• What part of a blowfin fish skull is this?

  Postorbital

  
• What part of a blowfin fish skull is this?

  Parietal

  
• What part of a blowfin fish skull is this?

  Opercular bones

  
• What part of a blowfin fish skull is this?

  Gulars

  
• What part of a blowfin fish skull is this?

  Quadrate

  
• Consider a seahorse, an elephant fish, a chaetodontidae, and a sturgepn, ranked from 1-4 what fish has the most mobile jaw?

  1. Sturgeon
  2. Elephant fish
  3. Chaetodontidae
  4. Seahorse
• How are sharks and rays similar?

  • Cartilaginous Skeleton
  • Paired fins
  • Paired nostrils
  • ampullae of Lorenzini
• How do sharks and rays differ?

  Sharks have a free-floating pectoral girdle

  Rays do not have a free-floating pectoral girdle
• What is unique about the sea robin?

  Upper placed eye

  Bony Plate on head

  Modified Pectoral fins
• Post-Cranial Skeleton: All bones that do not make up the skull
• What two function groups are included in the branchiocranium?

  • Splanchocranium
  • Dermatocranium
• Splanchnocranium: Endoskeletal bone derived from the visceral arches. This part of a fish skull includes all arched structures.