Lesson 7 Flashcards Preview

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Flashcards in Lesson 7 Deck (4)
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1
Q

What is the average number of muscles that birds have?

A

about 175 muscles

2
Q

Compare bird and mammal lungs

A

birds have smaller, denser lungs than mammals.

3
Q

What do birds have that compensates for their small lungs and lack of diaphragm.

A

Birds have air sacs that allow them to breath continuously.

4
Q

Why do birds need such large amounts of oxygen

A

to power their large flight muscles.