Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove Ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Vertebrate Zoology

Anamniotes to Amniotes

Ancestral Respiration Interfered with Lateral undulation; Motion would compress one lung and expand another and vice versa so no breathing while walking
Mammalian Respiration Upright posture so that dorsoventral ventilation could occur. So expansion and compression of lungs is in tune with body movements to allow breathing while moving.
Non-Avian Dinosaur Respiration Cuirassial pump includes gastralia as struts to expand the body cavity; Head and tail bob while walking to compress and decompress lungs and drive ventilation
Avian Respiration Lungs- thin capillaries that dont compress/decompress; Airsacs do the pumping linked to wings squeezing and stretching cavity; Allows for constant flow of oxygen rich air in capillaries, and thinner capillaries because of no flexion so higher efficiency
Pre-Avian Dinosaur Respiration Know airsacs existed from the presence of pneumatic bones; Respiration came before flight; Lightweight with more efficient oxygen intake to increase energy of large organisms; Allow for flight, didn't cause flight
Created by: LionsandGiants