Lab 24-26-27 Vertebrates and Mammalian Anatomy Flashcards
Characteristics of Chordates
- Dorsal tubular nerve cord 2. Dorsal supporting rod - Notochord 3. Post anal tail 4. Pharyngeal pouches 5. Endostyle
Pharyngeal pouches become ______
Gill slits
Two subphylum of chordates
- Urochordata 2. Cephalochordata
Animal in Urochordata
Tunicates (Sea Squirts)
Have incurrent and excurrent siphons, and gill slits
Tunicates
Animal in Cephalochordata
Lancelet (Amphioxus)
- Small, fishlike, shallow marine waters, burrow in bottom - Anterior end projects from sand
Lancelet (Amphioxus)
Characteristics of Vertebrates
- Vertebral column 2. Skull and cephalization 3. Bilateral symmetry 4. Segmented 5. Endoskeleton 6. Two pairs of appendages
All jawless fish
Superclass Agnatha
Means jaw mouth
Superclass Gnathostomata
Cartilaginous fish – sharks, skates, rays
Class Chondrichthyes
Bony fish – herring, salmon, sturgeon, eels
Osteichtyes
salamanders, newts, frogs, toads
Class Amphibia
snakes, lizards, turtles, tortoises
Class Reptilia
birds – sparrows, penguins, ostriches
Class Aves
Three types of animals under Mammalia
- Monotremes 2. Marsupials 3. Placental Mammals
Spiny anteater, duckbill platypus
Monotremes
Opossum, kangaroo
Marsupials
Whales, rodents, elephants, dogs, cats, horses, bats, humans
Placental Mammals
How many chambers does an Amphibian heart have?
Three chambers
Parts of an amphibian heart
- Two atrium - One ventricle
What kind of circulation does an amphibian heart have?
Double loop circulation
Heart circulation pattern in amphibians
Heart pumps blood to both gills and body