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

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Term
temporal bone
Definition
-paired.
-form the inferior lateral walls and part of the floor of the cranium.
-each temporal bone has a complex sturucture composed of three parts: petrous, squamous, and tympanic parts.
Term
squamous part
Definition
is the lateral flat suface of the temporal bone immediately inferior to the squamous suture.
Term
zygomatic process
Definition
immediately inferior to the squamous part is the prominent zygomatic process, it curves laterally and anteriorly to unite with the temporal process of the zygomatic bone.
Term
petrous portion
Definition
thick part of the temporal bone houses sensory structures of the inner ear that provide information about hearing and balance.
Term
carotid canal
Definition
medial to the styloid process and transmits the internal carotid artery.
Term
mandibular fossa
Definition
-each temporal bone articulates with the mandible inferior to the base of both zygomatic processes in a dression.
-anterior to the mandibular fossa is a bump called the articular tubercle.
-articulates with mandible.
Term
mastoid process
Definition
-prominent bulge on the inferior surface of the temporal bone.
-attachment site of some neck muscles to extend or rotate head.
Term
internal auditory canal
Definition
provides a passageway for nerves and blood vessesls to and from the inner ear
Term
external auditory canal
Definition
the tympanic part, a small bony ring surroundes the entrance to this external auditory canal.
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