All of the following landmarks will appear radiolucent EXCEPT:

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Radiolucent refers to areas on a radiograph that appear darker or black, indicating less density or less absorption of X-rays. A ridge, which is a bony elevation, will appear radiopaque or white on a radiograph as it absorbs more X-rays. Choices B and D describe bony depressions or concavities, which are radiolucent. Choice C refers to a natural opening in the bone, such as a foramen, which is also radiolucent.

All of the Following Landmarks Will Appear Radiolucent EXCEPT