| frontal angle of parietal bone |
The anterior superior angle of the parietal bone.
Synonym: angulus frontalis ossis parietalis.
(05 Mar 2000) |
| frontal bone |
The large single bone forming the forehead and the upper margin and roof of the orbit on either side; it articulates with the parietal, nasal, ethmoid, maxillary, and zygomatic bones, and with the lesser wings of the sphenoid.
Synonym: os frontale, coronale.
(05 Mar 2000) |
| frontal process of zygomatic bone |
The process of the zygomatic bone which extends upward to form the lateral margin of the orbit and articulates with the frontal bone and greater wing of the sphenoid bone.
Synonym: frontosphenoidal process, processus frontalis ossis zygomatici.
(05 Mar 2000) |
| parietal border of temporal bone |
The border of the squamous part of the temporal bone that articulates with the parietal bone.
Synonym: margo parietalis ossis temporalis.
(05 Mar 2000) |
| mastoid border of occipital bone |
The margin of the occipital squama that articulates with the temporal bone.
Synonym: margo mastoideus squamae occipitalis, mastoid margin of occipital bone.
(05 Mar 2000) |
| posterior border of petrous part of temporal bone |
The margin of the petrous part of the temporal bone that extends from the apex to the jugular notch; it articulates with the basal and jugular portions of the occipital bone.
Synonym: margo 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) |
| sphenoidal border of temporal bone |
The part of the border of the squamous part of the temporal bone that articulates with the greater wing of the sphenoid.
Synonym: margo sphenoidalis ossis temporalis.
(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) |
| superior border 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) |
| 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) |
| occipital border of temporal bone |
That part of the temporal bone that articulates with the occipital squama.
Synonym: margo occipitalis ossis temporalis.
(05 Mar 2000) |
| lambdoid border of occipital bone |
<anatomy> The margin of the occipital squama that articulates with the parietal bones in the lambdoid suture.
Synonym: margo lambdoideus squamae occipitalis, lambdoid margin of occipital bone.
(05 Mar 2000) |
| sphenoid |
1. Wedge-shaped; as, a sphenoid crystal.
2. <anatomy> Of or pertaining to the sphenoid bone.
<anatomy> Sphenoid bone, an irregularly shaped bone in front of the occipital in the base of the skull of the higher vertebrates. It is composed of several foetal bones which become united the adult. See Alisphenoid, Basisphenoid, Orbitosphenoid, Presphenoid.
Origin: Gr.; a wedge + form: cf. F. Sphenoide.
1. <chemistry> A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid.
2. <anatomy> The sphenoid bone.
Source: Websters Dictionary
(01 Mar 1998) |
| sphenoid crest |
A vertical ridge in the midline of the anterior surface of the sphenoid bone that articulates with the perpendicular plate of the ethmoid bone.
Synonym: crista sphenoidalis.
(05 Mar 2000) |
