Exam 21: Birds: Reptiles by Another Name

In birds,the sinus venosus persists as a patch of tissue in the right atrium and functions as

Ventilation in birds is accomplished by expansion and contraction of the

The occipital condyle is the point of articulation between the

Posterior caudal vertebrae in birds are fused into a __________ that helps support the tail feathers.

The covering of feathers on a bird is called the