NEB BCSE Practice Questions - NEB Basic And Clinical Sciences Examination (BCSE) Exam

Compared with mammals, which feature best characterizes the avian respiratory system?

Rigid lungs with air capillaries plus bellows-like air sacs and no muscular diaphragm Expanding alveolar lungs driven by a muscular diaphragm A single trachea that ends blindly without bronchi Gas exchange occurring primarily in the crop

Correct Answer:

Rigid lungs with air capillaries plus bellows-like air sacs and no muscular diaphragm

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