Changes

The trachea divides into two bronchii which open into the lungs without bronchioles. The lungs are simple hollow sacs with internal folds lined with faveoli (small sacs) for an increased surface area. In more advanced lizards, the lungs are further divided into interconnected chambers by few large septae.  

The trachea divides into two bronchii which open into the lungs without bronchioles. The lungs are simple hollow sacs with internal folds lined with faveoli (small sacs) for an increased surface area. In more advanced lizards, the lungs are further divided into interconnected chambers by few large septae.  

* Monitors have multichambered lungs with bronchioles that each end in a faveolus.

* [[Monitor|Monitors]] have multichambered lungs with bronchioles that each end in a faveolus.

* Chameleons have hollow, smooth-sided finger-like projections on the margins of their lungs used to inflate the body in response to predators. Some 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.

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.