| 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) |
| nasal bone |
Either of two small elongated rectangular bones that together form the bridge of the nose.
(12 Dec 1998) |
| nasal surface of palatine bone |
The nasal surface of the perpendicular lamina of the palatine bone that forms part of the lateral wall of the nasal cavity, the nasal surface of the horizontal lamina of the palatine bone that forms part of the floor of the nasal cavity.
Synonym: facies nasalis ossis palatini.
(05 Mar 2000) |
| bone within a bone |
<radiology> STOP heavy metal, S: sickle cell disease, T: Thorotrast, O: osteopetrosis, P: Paget's disease, heavy metals, hypervitaminosis D
(12 Dec 1998) |
| ascending frontal convolution |
Bounded posteriorly by the central sulcus and anteriorly by the precentral sulcus.
Synonym: gyrus precentralis, anterior central convolution, anterior central gyrus, ascending frontal convolution, ascending frontal gyrus.
(05 Mar 2000) |
| ascending frontal gyrus |
Bounded posteriorly by the central sulcus and anteriorly by the precentral sulcus.
Synonym: gyrus precentralis, anterior central convolution, anterior central gyrus, ascending frontal convolution, ascending frontal gyrus.
(05 Mar 2000) |
| median frontal sulcus |
A relatively shallow sagittal fissure of the brain dividing the middle frontal convolution into an upper and lower part; this sulcus is found only in humans and anthropoid apes; at its anterior extremity it bifurcates, the two branches spreading out laterally and constituting the frontomarginal sulcus.
Synonym: median frontal sulcus, sulcus frontalis medius.
(05 Mar 2000) |
| middle frontal convolution |
A convolution on the convexity of each frontal lobe of the cerebrum running in an anteroposterior direction between the superior and inferior frontal sulci.
Synonym: gyrus frontalis medius, middle frontal convolution.
(05 Mar 2000) |
| middle frontal gyrus |
A convolution on the convexity of each frontal lobe of the cerebrum running in an anteroposterior direction between the superior and inferior frontal sulci.
Synonym: gyrus frontalis medius, middle frontal convolution.
(05 Mar 2000) |
| middle frontal sulcus |
A relatively shallow sagittal fissure of the brain dividing the middle frontal convolution into an upper and lower part; this sulcus is found only in humans and anthropoid apes; at its anterior extremity it bifurcates, the two branches spreading out laterally and constituting the frontomarginal sulcus.
Synonym: median frontal sulcus, sulcus frontalis medius.
(05 Mar 2000) |
| septum of frontal sinuses |
The bony partition between the right and left frontal sinuses; it is often deflected to one side of the middle line.
Synonym: septum sinuum frontalium.
(05 Mar 2000) |
| superior frontal convolution |
A broad convolution running in an anteroposterior direction on the medial edge of the convex surface and of each frontal lobe.
Synonym: gyrus frontalis superior, marginal gyrus, superior frontal convolution.
(05 Mar 2000) |
| superior frontal gyrus |
A broad convolution running in an anteroposterior direction on the medial edge of the convex surface and of each frontal lobe.
Synonym: gyrus frontalis superior, marginal gyrus, superior frontal convolution.
(05 Mar 2000) |
| superior frontal sulcus |
A sagittal fissure on the superior surface of each frontal lobe of the cerebrum starting from the precentral sulcus; it forms the lateral boundary of the superior frontal convolution.
Synonym: sulcus frontalis superior.
(05 Mar 2000) |
| inferior frontal convolution |
A broad convolution on the convexity of the frontal lobe of the cerebrum between the inferior frontal sulcus and the sylvian fissure; divided by branches of the sylvian fissure into three parts: pars (opercularis) basilaris, triangular part, and orbital part; the first two constitute a portion of the frontal operculum.
Synonym: gyrus frontalis inferior, inferior frontal convolution.
(05 Mar 2000) |
