Carotid canal

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Carotid canal
Gray141.png
Left temporal bone. Inferior surface. ("Opening of carotid canal" labeled at center left.)
Details
Latin canalis caroticus
Identifiers
Gray's p.143
Dorlands
/Elsevier
c_04/12208545
TA A02.1.06.013
FMA FMA:55805
Anatomical terms of bone

The carotid canal is the passage way in the temporal bone through which the internal carotid artery enters the middle cranial fossa from the neck. The canal starts on the inferior surface of the temporal bone at the external opening of the carotid canal (also referred to as the carotid foramen). The canal ascends at first vertically, and then, making a bend, runs horizontally forward and medialward. The canal's internal opening is near the foramen lacerum above which the internal carotid artery passes on its way to the cavernous sinus.

Contents[edit]

It transmits into the cranium, the internal carotid artery, and the carotid plexus of nerves.

Sympathetics to the head from the superior cervical ganglion also pass through the carotid canal. They have several motor functions: raise the eyelid (superior tarsal muscle), dilate pupil, innervate sweat glands of face and scalp and constricts blood vessels in the head.

Additional images[edit]

External links[edit]

This article incorporates text from a public domain edition of Gray's Anatomy.