Which Statement(s)about the Functions of the Paranasal Sinuses Is/are True

question 146

Multiple Choice

Which statement(s) about the functions of the paranasal sinuses is/are true?

• A)They provide an extensive area of mucous epithelium.
• B)They make skull bones lighter.
• C)The mucus they secrete enters the nasal cavities.
• D)They support cilia that move the mucus.
• E)All of the answers are correct.

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Definitions:

Cationic Center

A site within a molecule that bears a positive charge, typically found in organometallic or organic compounds.

CCC Bond Angle

The angle between three consecutive carbon atoms within an organic molecule, significant in determining molecule shape.

Hybridization

The concept in chemistry where atomic orbitals mix to form new hybrid orbitals suitable for the pairing of electrons to form chemical bonds.

Acetaldehyde

A colorless volatile compound with a pungent odor, used in the manufacture of acetic acid, perfumes, and flavors.