Mastoid process

Processus mastoideus

  • Latin synonym: Processus mastoides

Definition

The mastoid process is a significant cone-shaped projection from the bottom of the skull, situated just behind the ear opening–the external acoustic meatus–and positioned posterolateral to the styloid process. It points downward and forward. The mastoid process provides a point of attachment for several muscles and has a groove on its inner side known as the mastoid notch, which anchors the posterior belly of the digastric muscle.

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

  • Drake, R.L., Vogl, A.W. and Mitchell, A.W.M. (2009). ‘Chapter 8: Head and Neck’ in Gray’s anatomy for Students. (2nd ed.) Philadelphia PA 19103-2899: Elsevier, pp. 821.

  • XR Anatomy (copyright 2023-24). Available at: https://xranatomy.com/temporal-bone/  (Updated: 10th Mar, 2023; Accessed 3rd April, 2024)


Comparative anatomy in animals

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