ANATOMY l
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SECTIONS |
| GENERAL
FACTS CLASSIFICATION ANATOMY ll NEWS and ARTICLES DINOSAUR PICTURES GLOSSARY ADVANCED TOPICS EXTINCTION THEORIES EXHIBITS FUN and ACTIVITIES DISCUSSION GROUPS CHAT ROOMS |
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HOW IS A DINOSAUR PUT
TOGETHER? |
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| SKELETON Skull and madible formed the braincase and jaws. Holes in the skull were fro muscles, nostrils, and glands. Teeth were specialized according to diet; new teeth replaced old ones, which fell out. |
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| Ribs shielded the vital organs. Some dinosaurs also had belly ribs, called gastralia. Limb bones acted as levers worked by muscles. |
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| SOFT ANATOMY Bones were bound together by ligaments, and muscles were often attached to bones by tendons. Pared, opposing muscles contracted and relaxed to move limbs to and fro. Flesh-eaters digestive system had a fairly short, simple alimentary tract, but herbivores needed a long, complex intestine to break down fibrous vegetation. |
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HEART-LUNG SYSTEM (next page) |