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Avian Anatomy & phys

Major comp avian anatomy & pays from vmc 953

Respiratory Flow Nares-->Nasal cavity-->Choana-->Trachea-->Lungs + air sacs
Fused bones
Respiratory system Flow-through & efficient
Ceolomic cavity Thorax & abdominal cavity (no diaphragm)
Is there residual capacity if air flow stops? No, small lungs so have relatively low functional residual capacity
How does birds compensate for dead space in respiratory system Breath slow and deeply
How is air moved bellow action: elevating & depressing sternum
How does turning a bird upside down affect inspiration It increases the work because weight influences forces needed to move sternum
Is inspiration and expiration active processes yes, because the sternum rests at the midpoint of its excursion
A common sign of upper respiratory disease Rhinitis
Where is the infraorbital sinus cranial, ventral, and medial to the eyeball
what does the infraorbital sinus communicate with the pneumatized areas of the skull
Created by: meserran