1. 6/3/15 Mr. Faia 6th Grade Science
Amphibians

2. FISH REVIEW Name the 3 types of fish.
What are the skeletons made of for each type?
What type of eaters are all cartilaginous fish?
What is a swim bladder?
What does a swim bladder do for a fish?
What type of fish have a swim bladder?
Define buoyant force.
What percentage of fish are bony fish?
Why do sharks have rows of teeth?
Name the 2 types of jawless fish.
Name the 3 types of cartilaginous fish.

3. Gills to Lungs Ectothermic vertebrate
What does ectothermic mean?
The early part of its life is spent in water
Amphibian actually means “double life”

4. Gills to lungs Most amphibians begin life in water
Spend adulthood on land
Return to water to reproduce
What is this process called?

5. Gills to lungs Amphibians lay their eggs in water Larvae live in water
Have gills to breathe

6. Gills to lungs Adults lose gills and acquire lungs
Can also obtain oxygen and release carbon dioxide through the skin

7. Amphibian circulation
Amphibians have closed circulatory systems
Different in larva and adults

8. Amphibian circulation
Larva have a single loop
Like a fish
Adults have a double loop

9. Amphibian circulation
Upper chambers of the heart are called atria
Lower chamber is called the ventricle

10. Amphibian circulation
One atrium receives oxygen rich blood from the lungs
The other gets oxygen poor blood from the body

11. Amphibian circulation
The ventricle pumps blood out to the lungs and body

12. Reproduction and development
All amphibians reproduce through sexual reproduction
Amphibian eggs are coated in a clear jelly

13. Reproduction and development
Amphibians then go through metamorphosis after hatching

14. Getting Around on land Adult amphibians have very strong skeletons
Muscular limbs allow for movement on land

15. GETTING AROUND ON LAND Eyes are adapted for land
Transparent membrane to keep from drying out
Have eyelids unlike fish
Able to close their eyes

16. Frogs and Toads Adapted for hopping and leaping
Powerful muscles and bones in the hind legs

17. REVIEW Are amphibians ectotherms or endotherms?
What process do amphibians go through to reach adulthood?
How do amphibians reproduce?
Name the chambers of an amphibian’s heart.
How many loops does a tadpoles circulatory system have?
How many loops does an adult’s circulatory system have?
What covers an amphibian’s eggs?
How do amphibian larva breathe?