External occipital protuberance

External occipital protuberance is a bony prominence located at the back of the human skull. It is part of the occipital bone, which forms the back and base of the skull. The external occipital protuberance is most prominent in adult males.

Etymology

The term "external occipital protuberance" is derived from the Latin words "externus" meaning "outside", "occipitalis" meaning "of the occiput", and "protuberantia" meaning "a bulging out". The occiput is the back part of the skull.

Anatomy

The external occipital protuberance is located in the middle of the occipital bone. It is a prominent feature and can be easily felt at the back of the head. It serves as an attachment point for several muscles and ligaments, including the trapezius muscle and the ligamentum nuchae.

Clinical significance

The external occipital protuberance can be used as a landmark in medical procedures and examinations. For example, it can help in the positioning of patients for radiography. It can also be used to measure the size of the skull and to determine the alignment of the skull and spine.

See also

• Inion
• Occipital bone
• Human skull

References

External occipital protuberance Resources
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