| petrous part of temporal bone |
The part of the temporal bone that contains the structures of the inner ear and the second part of the internal carotid artery; in antenatal life it appears as a separate ossification centre.
Synonym: pars petrosa ossis temporalis, periotic bone, petrosal bone, petrous pyramid.
(05 Mar 2000) |
| crest of petrous part of temporal bone |
The margin that separates the anterior and posterior surfaces of the petrous part of the temporal bone and the lateral part of the middle cranial fossa from the posterior cranial fossa.
Synonym: margo superior partis petrosae ossis temporalis, crest of petrous part of temporal bone.
(05 Mar 2000) |
| posterior surface of petrous part of temporal bone |
The surface of the petrous part of the temporal bone that contributes to the posterior cranial fossa.
Synonym: facies posterior partis petrosae ossis temporalis.
(05 Mar 2000) |
| sagittal border of parietal bone |
The medial border of the parietal bone entering into the sagittal suture.
Synonym: margo sagittalis ossis parietalis.
(05 Mar 2000) |
| squamous border of parietal bone |
The lateral border of the parietal bone that articulates with the squamous part of the temporal bone.
Synonym: margo squamosus ossis parietalis.
(05 Mar 2000) |
| squamous border of sphenoid bone |
The margin of the greater wing of the sphenoid bone that articulates with the squamous part of the temporal bone.
Synonym: margo squamosus ossis sphenoidalis.
(05 Mar 2000) |
| squamous part of temporal bone |
The broad, flat, thin (scale-like) anterior and superior portion of the temporal bone forming part of the lateral wall of the cranial vault.
Synonym: pars squamosa ossis temporalis, squama temporalis, temporal squama.
(05 Mar 2000) |
| nasal border of frontal bone |
The border of the frontal bone that articulates with the nasal bones.
Synonym: margo nasalis ossis frontalis, nasal margin of frontal bone.
(05 Mar 2000) |
| styloid process of temporal bone |
A slender pointed projection running downward and slightly forward from the base of the inferior surface of the petrous portion of the temporal bone where it joins the tympanic portion; it gives attachment to the styloglossus, stylohyoid, and stylopharyngeus muscles and the stylohyoid and stylomandibular ligaments.
Synonym: processus styloideus ossis temporalis.
(05 Mar 2000) |
| inferior surface of petrous part of temporal bone |
Inferior surface of petrous part of the temporal bone; the portion of the petrous part of the temporal bone that contributes to the external base of the skull.
Synonym: facies inferior partis petrosae ossis temporalis.
(05 Mar 2000) |
| occipital border of parietal bone |
The posterior margin of the parietal bone that articulates with the occipital squama.
Synonym: margo occipitalis ossis parietalis.
(05 Mar 2000) |
| temporal bone |
<anatomy> A large irregular bone situated in the base and side of the skull, consisting of three parts, squamous, tympanic and petrous.
The bones are distinct at birth; the petrous part contains the vestibulocochlear organ; the bone articulates with the sphenoid, parietal, occipital, and zygomatic bones, and by a synovial joint with the mandible.
Synonym: os temporale.
(05 Mar 2000) |
| tympanic part of temporal bone |
The bony plate forming the greater part of the anterior wall of the bony part of the external acoustic meatus and the tympanic cavity and the posterior wall of the mandibular fossa.
Synonym: pars tympanica ossis temporalis, tympanic part of temporal bone.
(05 Mar 2000) |
| tympanic plate of temporal bone |
The bony plate forming the greater part of the anterior wall of the bony part of the external acoustic meatus and the tympanic cavity and the posterior wall of the mandibular fossa.
Synonym: pars tympanica ossis temporalis, tympanic part of temporal bone.
(05 Mar 2000) |
| jugular notch of temporal bone |
The notch in the temporal bone which forms one boundary of the jugular foramen.
Synonym: incisura jugularis ossis temporalis.
(05 Mar 2000) |
