1. Ch. 3 Sec. 1 What is a Vertebrate?

3. There are a few invertebrates that are chordates (they have a notochord)
But most chordates are vertebrates, and their notochord is replaced by a backbone as they develop.

4. Similarities in vertebrate development

5. functions of endoskeleton
(internal skeleton)
1. supports & protects body
2. gives body shape
3. gives muscles place to attach

6. A vertebrate’s backbone is part of an endoskeleton, or internal skeleton.

7. endoskeleton

8. Snake skeleton

9. Turtle skeleton

10. The backbone The backbone is not just one huge bone!
It is formed by many VERTEBRAE (singular vertebra)
There is a hole through each vertebra to allow the nerve cord to pass through it

11. ectotherm animal whose body temp. does not produce much internal heat
body temp. changes depending on temp. of environment
“cold-blooded”
examples:
fishes
amphibians
reptiles

12. endotherm
animal whose body controls & regulates its temp. by controlling internal heat it produces
body temp. does not change much with environment
“warm-blooded”
examples:
birds
mammals

13. endotherm
ectotherm

14. ectotherms endotherms
Draw pictures of
3 ectotherms & 3 endotherms.
ectotherms endotherms
birds
mammals
reptiles
fish
amphibians