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Avian Anatomy & phys
Major comp avian anatomy & pays from vmc 953
| Question | Answer |
|---|---|
| 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 |