Which Two Must Occur to Successfully Demonstrate the Ethmoidal and Sphenoidal

question 164

Multiple Choice

Which two must occur to successfully demonstrate the ethmoidal and sphenoidal sinuses on the SMV projection? (Select all that apply.)

• A) Central ray aligned horizontal and enters perpendicular to IOML.
• B) Patient must be recumbent.
• C) IOML aligned parallel with the image receptor.
• D) OML aligned parallel with the image receptor.

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Definitions:

Lewis Structure

A diagram that represents the valence electrons of atoms within a molecule, showing how these electrons are arranged around atoms and indicating the bonds between them.

Ionic

Relating to, composed of, or using ions, which are atoms or molecules with a net electric charge due to the loss or gain of one or more electrons.

Covalent

A type of chemical bond where atoms share pairs of electrons.

Hydrogen Chloride

A gaseous compound made of hydrogen and chlorine; when dissolved in water, it forms hydrochloric acid.