The letter D in the image below of the paranasal sinuses labels the _____ sinuses. 
Definitions:
Diagnostic Labels
Terms used in healthcare and psychology to classify and describe a set of symptoms that are recognized as a particular disorder or disease.
Objectivity
The quality of being unbiased, unprejudiced, and impartial in observation or judgment.
Universality
A principle that suggests certain concepts or phenomena are universal and applicable to all individuals or situations.
Projective Tests
Psychological tests that use ambiguous or unstructured stimuli, allowing the person to project their feelings, desires, and needs.
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