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occipital bone
n/a
9
Anatomy
Professional
07/05/2009

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Term
foramen magnum
Definition
- within the basilar part of the occipital bone is a large, circular opening.
-lateral to this foramen are smooth knobs called occipital condyles
Term
occipital condyles
Definition
-lateral to the foramen are the occipital condyles.
-this articulates with the first cervical vertebra.
-when you nod "yes" moving the occipital condyles against the vertebra.
Term
internal occipital protuberance
Definition
-on the interal surface of the occipital bone, at the junction, of the left and right grooves for the transverse sinuses is the internal occipital protuberance.
Term
external occipital protuberance
Definition
-attachment of muscles that move head.
-the external occipital crest projects in a posterior direction from the foramen magnum, ending in the external occipial protuberance.
Term
basilar region
Definition
-which forms the portion of the base of the cranium.
-within the basilar part the large circular opening is called the foramen magnum.
Term
jugular notch
Definition
-the portion of the occipital bone that helps form the jugular foramen is called the jugular notch.
Term
squamous region
Definition
-occipital bone is subdivided into a flattened squamous part which forms the posterior region of the skull and a median basilar part which forms a portion of the base of the cranium
Term
external occipital crest
Definition
-attachment site for ligaments.

-projects in a posterior direction from the foramen magnum.
Term
inferior nuchal line
Definition
attachment of neck ligaments and muscles.
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