Once this type of retinal detachment develops and causes symptoms, it can progress to total blindness if it is not repaired promptly. In the United States, retinal detachment is a relatively uncommon condition, affecting only one of every 10,000 Americans each year.
Gas exchange in reptiles still occurs in alveoli however, reptiles do not possess a diaphragm. Thus, breathing occurs via a change in the volume of the body cavity which is controlled by contraction of intercostal muscles in all reptiles except turtles.
1 gas exchange is the ventilation of gases to and from the body cells of an animal so cellular respiration can take place. 2  gas exchange surfaces provide an area for gases to be exchange between the medium (air or water) and body cells, usually enclosing a moving blood supply. gas exchange is the ventilation of gases to and from the body cells of an animal so cellular respiration can take place. 2  gas exchange surfaces provide an area for gases to be exchange between the medium (air or water) and body cells, usually enclosing a moving blood supply.