How Do You Spell FORAMEN LACERUM POSTERIUS?

1. The foramen lacerum posterius is a term used in anatomy to refer to a specific opening located at the base of the skull. The foramen lacerum posterius is situated in the temporal bone, at the junction between the base and side of the skull. It is positioned just behind another skull opening known as the foramen lacerum, and hence, the term "posterius" is added to indicate its posterior location.

   This opening serves as an important passageway for several structures that contribute to the anatomy of the skull and surrounding areas. Several nerves, including the great petrosal nerve, the deep petrosal nerve, and the canaliculus innominatus, pass through the foramen lacerum posterius. Additionally, it provides a route for the passage of small blood vessels, such as the ascending pharyngeal artery and the pharyngeal branch of the middle meningeal artery.

   The foramen lacerum posterius is enclosed within a membrane called the cartilaginous part of the foramen lacerum and is covered by a fibrous sheath, giving it a uniquely shaped appearance. It is important to note that although it is called a "foramen," this opening is not completely filled with bone, but rather a combination of cartilaginous tissue and connective tissue. The precise functional significance of the foramen lacerum posterius is still a topic of study and research among anatomists and medical professionals.

2. Jugular foramen.

   A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.

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