Chapter 26: Reptiles Flashcards Preview

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Flashcards in Chapter 26: Reptiles Deck (12):
1

By late Carboniferous period the amniotes (those that lay amniotic eggs) had separated into what three groups?

- Anapsid
- Diapsid
- Synapsid

2

Describe Anapsids?

- no temporal openings in the skull
- only seen in turtles today

3

Describe Diapsid?

- all other reptilian groups and birds have this skull
- two temporal openings
- include extinct reptiles such as dinosaurs and pleisosaurs

4

Describe Synapsid?

- mammals and extinct forms of mammals like reptiles
- single temporal opening

5

Differences from amphibians:
(4)

- tough, dry skin offering protection from desiccation and injury
-Amniotic egg breaks all ties with water
- stronger jaws for crushing and gripping (jaw muscles larger and longer and better arranged for mechanical advantage)
- force is in closing not in opening

6

Fertilization is ?

internal

7

In comparison to amphibians what is their circulatory system like?

- more efficient and higher bp

8

They have better adapted?

- lungs

9

Ex of better water conservation strategies?

- metanephric kidney and excrete nitrogenous wastes as uric acid which helps conserve water

10

In terms of support how do they hold up to amphibians?

- better boy support and more efficient on land

11

NS in comparison to amphibians ?

- more complex
- skull has one occipital condyle
- 12 cranial nerves

12

What are the three orders we examined in class?

- Squamata
- Testudines (Chelonia)
- Crocodilia

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