The following questions refer to the figure below of an axial CT of the temporal bone. 
-Which line points to the sphenoid sinus?
Definitions:
Referendum
A direct vote by the electorate on a specific proposal or issue, bypassing the legislative body.
Congressional Election
The process by which members are elected to the United States Congress, consisting of the Senate and the House of Representatives.
Elected Official
An individual who has been chosen by voters to hold a public office through a democratic electoral process.
Direct Democracy
Direct democracy is a form of government in which citizens directly participate in the decision-making processes, rather than through elected representatives, often through referendums and initiatives.
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