Question

How does a crane breath

Answer 1

Answer:

brainliest

Explanation:

Birds do not have a diaphragm so air is moved in and out of

the respiratory system through pressure changes in the air sacs. Muscles in the

chest cause the sternum to be pushed outward. This creates a negative pressure

in the air sacs, causing air to enter the respiratory system. For expiration

certain muscles contract to increase the pressure on the air sacs and push the

air out.

Respiration in birds requires two respiratory cycles

(inspiration, expiration, inspiration, expiration) to move the air through the

entire respiratory system.

Answer 2

Answer:

here is your answer. ....helo......

Explanation:

hope it helps u....

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