What is the correct code for recurrent pterygium of both eyes?

Which criteria indicates a properly positioned AP axial Townes method?

the dorsum sellae is projected within the foramen magnum the dens is projected within the foramen magnum the dorsum sellae is projected superior to the foramen magnum the dorsum sellae is projected inferior to the foramen magnum

_________________ is accomplished in the mouth, where food is mechanically broken down into small pieces by the action of the teeth

A) Chemical digestion B) Mechanical digestion C) Accessory digestion D) Functional digestion