Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
Characteristics of chordates |
1. notochords 2. dorsal, hollow nerve chord 3. muscular, post-anal tail 4. Pharyngeal slits or clefts |
|
Urochordata |
subphylum of chordates
ancestral chordates marine suspension feeders sea squirts or turnicates
= most chordates resemble them when theyre in the womb |
|
Cephalochordata |
the lancelets
blade-like shape adults have 4 hallmark characteristcs of chordates |
|
Craniates |
chordates that have a head skull, brain, eyes, & sensory organs
most primitive still in existense-- hagfish |
|
Vertebrates |
chordates with backbones craniates + backbone enclosed spinal chord elaborate skull |
|
Agnatha |
vertebrate without jaws |
|
Ostracoderms |
armored, jawless fish defensive plates of bone on their skin |
|
Gnathostomes |
vertebrate with jaws! increased predation |
|
Chondrichthyes |
cartlidge fish! skeleton of primarily cartlidge sharks, reys, etc |
|
Osteichthyses |
bony fish |
|
Tetrapods |
gnathostomes with four limbs four limbs, feet with digits ears for detecting sound |
|
Amphibia |
"double life" transition from water to land moist skin that aids in gas exchange |
|
Urodela |
order of amphibia - salamanders with tails |
|
Anura |
order of amphibia - frogs//no tails |
|
Apoda |
order of amphibia caecilians, leggless (like worms) |
|
Amniotes |
tetrapods with terrestrially adapted egg
living members are the reptiles, birds, and the mammals
The amniotic egg contains specialized |
|
Ectothermic |
being able to absorb heat from outside environment external heat is main source of body heat
(reptiles) |
|
Endothermic |
internal heat source capable of keeping the body warm through metabolism |
|
Aves |
birds! class of chordata adapted for flight wings and feathers
|
|
Mammalia |
the mammalsssss :D mammary glands hair diaphragm |
|
Monotremes |
group of egg laying mammals |
|
Eutherians |
mammals with placenta longest period of pregnancy complete embryonic development within uterus |
|
Primates |
humans are primates group of mammals A large brain and short jaws |