Which Cranial Bone Does Not Contain a Paranasal Sinus

question 28

Multiple Choice

Which cranial bone does not contain a paranasal sinus?

• A) Sphenoid
• B) Frontal
• C) Ethmoid
• D) Maxilla
• E) Occipital

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Definitions:

Superior Border

The uppermost edge or boundary of an anatomical structure.

Inferior Rib

Refers to the lower ribs in the human rib cage, possibly intended to distinguish them from upper ribs but not a standard anatomical term.

Transverses Thoracis

A muscle within the thorax that plays a role in the movement of the thoracic cage during respiration.

External Obliques

Muscles located on the sides of the abdomen, involved in the rotation of the spine and the lateral flexion of the torso.