List the significant information considered in each of the 4 areas of a general survey—physical appearance, body structure, mobility, and behavior.

First lets start with physical appearance which would include of course age and the sex of a person. Also the the facial features and skin are important in describing an individual as well as level of consciousness.

Significant information for body structure would include body build as well as contour and stature. Symmetry and position and as well as nutrition likewise provide significant information.

Mobility usually refers to range of motions person exhibits and their gait, which provides information how person walks, runs and  does other such activities. 

Behavior has many significant information such as facial expressions and mood and affect. These can be a seen also as  a part of nonverbal communication and thus provide a wealth of information. Speech also contains many information as well as how someone dresses. Personal hygiene is also a factor here.