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James White

on 2 June 2010

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Transcript of Chordata

Chordata Classes From the least complicated to the most complicated Fishes Some common names Flying fish
Fish are the least complicated vertebrate They are bilateral and made of cartilage and bone Fishes have a complete digestive system Mouth Esophagus Stomach Intestines Anus They breathe through their gills The circulatory system closed single loop four part heart Their brain is well developed
and fish have good senses
and can even feel slight vibrations.
Fish lay eggs and can either carry the eggs inside of themselves or lay them externally. Nitrogen waste is in the form of ammonia
and the kidneys are the main organ in the
excretory system. Amphibians Frogs
Salamanders live on land and water Bilateral
Bony skeleton Esophagus Stomach
Cloaca Colon Stomach Esophagus Mouth Cloaca Small intestine Colon lungs, but also breathe through the skin and the lining of the mouth 3 chamber heart Closed double loop Brain like a fish and can hear through eardrums sexual reproduction and lay eggs externally Nitrogen waste is in the form of urine
and deposited through the cloaca Reptiles usually have dry scaly skin cold blooded Carnivores and herbivores digestive like that of an amphibian spongy lungs to breathe double loop system three or four part heart.
2 atria with 1 or 2 ventricles Urine is produced by the kidneys and contains amonnia or uric acid. amphibian like brain but the cerebrum is
much larger than the rest of the brain. very keen senses and can detect chemicals with tongue strong stout limbs for walking and running live on land and water
sexual reproduction with sperm egg with hard shell Birds ability to fly Eagles
Owls Bilateral
Bony skeleton
Hollow bones for flight Mouth-Crop-Stomach-Gizzard-Intestine-Cloaca Respiratory Air sacs to lungs to body 4 chambered heart 2 seperate loops can interpret things very very quickly and has a large brain compared to its body sexual reproduction eggs with hard shells excretory like a reptile system Humans Dogs Cats Horses Bilateral Strong Skeleton Mouth Esophagus stomach large intestine small intestine anus respiratory: or nose mouth lungs to body diaphragm is used two seperate loops 4 chambered heart atria and ventricles most highly developed brain three part brain sexual young born alive Kidneys make urea then urine
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