What passes thru the foramen lacerum?
The two nerves that pass from the foramen lacerum are the greater petrosal nerve, which represents the pre-ganglionic parasympathetic fibers, and the deep petrosal nerve which, representing the post-ganglionic sympathetic fibers.
What is the importance of the foramen lacerum?
Clinical significance The foramen lacerum has been described as a portal of entry into the cranium for tumours, including nasopharyngeal carcinoma, juvenile angiofibroma, adenoid cystic carcinoma, malignant melanoma, and lymphoma.
Why is it called foramen lacerum?
The foramen lacerum (plural: foramina lacera) is a triangular opening located in the middle cranial fossa formed by the continuation of the petrosphenoidal and petroclival fissures. Thus, it is a gap between bones, alternatively termed the sphenopetroclival synchondrosis, rather than a true foramen within a bone 2.
Is foramen lacerum in sphenoid bone?
The foramen lacerum does not represent a true foramen in the sense of an osseous channel containing neurovascular structures, but rather a gap formed by the incomplete confluence of three essential osseous structures composing the central skull base: the sphenoid bone (body and greater wing), temporal bone (petrous …
Is foramen lacerum and carotid canal the same?
The foramen lacerum is a triangular hole in the base of the skull located at the base of the medial pterygoid plate. The internal carotid artery passes superiorly from the carotid canal in the base of the skull, emerging via that part of the foramen lacerum which is not occluded by cartilage.
What does Lacerum mean?
Lacerum or lacer from Latin may refer to: In anatomy and medicine: Foramen lacerum, a triangular hole in the base of the skull. Lacerum segment, a part of the course of the internal carotid artery.
Is foramen lacerum a true foramen?
RESULTS: The foramen lacerum is not a true foramen. No significant structures traverse its fibrocartilage. In this region, the bony and fibrous structures surround the internal carotid artery to form an incomplete canal, which serves as the rostral extension of petrous canal.
Is foramen lacerum the carotid canal?
The foramen lacerum is a foramen situated anteromedial to the carotid canal. The petrous segment, or C2 segment, of the internal carotid artery is that which is inside the petrous part of the temporal bone.
Does internal carotid pass through foramen lacerum?
What does Wikipedia say about the stylomastoid foramen?
Stylomastoid foramen From Wikipedia, the free encyclopedia Between the styloid and mastoid processes of the temporal bone is the stylomastoid foramen It is the termination of the facial canal, and transmits the facial nerve and stylomastoid artery.
Where does the stylomastoideum transmit the facial nerve?
[TA] the distal or external opening of the facial canal on the inferior surface of the petrous portion of the temporal bone, between the styloid and mastoid processes; it transmits the facial nerve and stylomastoid artery. Synonym(s): foramen stylomastoideum [TA]
Where is the stylomastoid artery located in the face?
[TA] the distal or external opening of the facial canal on the inferior surface of the petrous portion of the temporal bone, between the styloid and mastoid processes; it transmits the facial nerve and stylomastoid artery.