| 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) |
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| 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) |
| inferior frontal gyrus | 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) |
| inferior frontal sulcus | A sagittal fissure on the lateral convex surface of each frontal lobe of the cerebrum demarcating the middle from the inferior frontal gyrus. Synonym: sulcus frontalis inferior. (05 Mar 2000) |
| epilepsy, frontal lobe | Epileptic seizures arising from the frontal lobe characterised by simple partial, complex partial, secondary generalised seizures, or combinations of these. The seizures, which are short in duration, may occur several times a day, mostly during sleep. Affected individuals usually have prominent motor manifestations which are tonic or postural, complex gestational automatisms at the onset, and fall to the ground when the discharge is bilateral. Status epilepticus is a frequent complication. (12 Dec 1998) |
| frontal | Belonging to the front part; being in front; especially. <anatomy> . Of or pertaining to the forehead or the anterior part of the roof of the brain case; as, the frontal bones. Origin: Cf. F. Frontal. 1. Something worn on the forehead or face; a frontlet; as: An ornamental band for the hair. The metal face guard of a soldier. 2. A little pediment over a door or window. 3. A movable, decorative member in metal, carved wood, or, commonly, in rich stuff or in embroidery, covering the front of the altar. Frontals are usually changed according to the different ceremonies. 4. <medicine> A medicament or application for the forehead. 5. <anatomy> The frontal bone, or one of the two frontal bones, of the cranium. Frontal hammer or helve, a forge hammer lifted by a cam, acting upon a "tongue" immediately in front of the hammer head. Origin: F. Frontal, fronteau, OF. Frontel, frontal, L. Frontale an ornament for the forehead, frontlet. See Front. Source: Websters Dictionary (01 Mar 1998) |
| frontal area | Cortex of the frontal lobe of the cerebral hemisphere, originally, the entire cortical expanse anterior to the central sulcus, including the agranular motor and premotor cortex (Brodmann's areas 4 and 6), the dysgranular cortex (area 8), and the granular frontal (prefrontal) cortex anterior to the latter, now more often refers to the granular frontal (prefrontal) cortex. Synonym: frontal area. (05 Mar 2000) |
| frontal artery | <anatomy, artery> Origin, ophthalmic; distribution, anterior portion of scalp; anastomoses, branches of supraorbital. Synonym: arteria supratrochlearis, arteria frontalis, frontal artery. (05 Mar 2000) |