Styloid process of temporal bone

Processus styloideus ossis temporalis

  • Latin synonym: Processus styloides
  • Related terms: Styloid process

Definition

The styloid process of temporal bone, a pencil-thin projection, gracefully extends downward and forward from the lower petrous-temporal surface. The styloid process is wrapped at its base by the tympanic plate, which is particularly distinct at the front and the lateral sides of this process. Medially, the tympanic plate emerges from the vaginal process, adjoining the orifice of the carotid canal, while laterally the tympanic plate encircles the external acoustic meatus.

Serving as an anchor, the inferior segment of the styloid process of temporal bone gives rise to three noteworthy muscles: the styloglossus, which courses towards the tongue; the stylopharyngeus, destined for the pharyngeal wall; and the stylohyoid, which secures itself to the hyoid bone. Furthermore, the styloid process serves as the point of attachment for two vital ligaments: the stylohyoid and the stylomandibular, which extend to the hyoid bone and mandible, respectively.

This articulation with muscles and ligaments underscores the styloid process’ critical role in the intricate interplay that governs swallowing and tongue movements.

References

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Text written by Muhammad A. Javaid, MD, PhD © 2024 IMAIOS.

  • Standring, S. (2016). ‘Chapter 27: External Skull’ in Gray’s anatomy: the anatomical basis of clinical practice. (41st ed.) New York NY: Elsevier, pp. 423.

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