Changes

* [[Chameleon|Chameleons]] have hollow, smooth-sided finger-like projections on the margins of their lungs used to inflate the body in response to predators. Some [[Chameleon|chameleons]] also have an accessory lung lobe projecting from the anterior trachea cranial to their forelimbs. When infected, it will fill with secretions and appear as a swelling of the ventral neck.

* [[Chameleon|Chameleons]] have hollow, smooth-sided finger-like projections on the margins of their lungs used to inflate the body in response to predators. Some [[Chameleon|chameleons]] also have an accessory lung lobe projecting from the anterior trachea cranial to their forelimbs. When infected, it will fill with secretions and appear as a swelling of the ventral neck.

Respiration, which is voluntary and dependant on blood carbon dioxide pressure and temperature, is aided by expansion and contraction of the ribs as lizards lack a diaphragm.

[[Lizard and Snake Respiration|Respiration]], which is voluntary and dependant on blood carbon dioxide pressure and temperature, is aided by expansion and contraction of the ribs as lizards lack a diaphragm.

In many lizards gas exchange occurs in the cranial part of the lung, while the caudal portion of the lung is analagous to the avian air sac.

In many lizards gas exchange occurs in the cranial part of the lung, while the caudal portion of the lung is analagous to the avian air sac.

Some lizards can revert to anaerobic metabolism during prolonged periods of apnea.

Some lizards can revert to [[Lizard and Snake Respiration|anaerobic]] metabolism during prolonged periods of apnea.

==Nares==

==Nares==