| A&BC | air and bone conduction |
|---|---|
| ABM | adjusted body mass; alveolar basement membrane; autologous bone marrow |
| ABMI | autologous bone marrow transplantation |
| ABMT | American Board of Medical Toxicology; autologous bone marrow transplantation |
| AC/BC | air conduction/bone conduction [time ratio] |
| frontal eminence | The most prominent portion of the frontal bone on either side. Synonym: tuber frontale, eminentia frontalis, frontal tuber. (05 Mar 2000) |
|---|---|
| frontal fontanel | A diamond-shaped membranous interval at the junction of the coronal, sagittal, and metopic sutures where the frontal angles of the parietal bones meet the two ununited halves of the frontal bone. Synonym: fonticulus anterior, bregmatic fontanel, frontal fontanel. (05 Mar 2000) |
| frontal foramen | An occasional small opening in the supraorbital margin of the frontal bone medial to the supraorbital foramen. Synonym: foramen frontale. (05 Mar 2000) |
| frontal grooves | See: inferior frontal sulcus, middle frontal sulcus, superior frontal sulcus. (05 Mar 2000) |
| frontal horn | See: inferior horn of lateral ventricle, inferior horn. (05 Mar 2000) |
| frontal lobe | The frontal lobes are responsible for higher cognitive thought processes. (27 Sep 1997) |
| frontal lobe epilepsy | A localization-related epilepsy with seizures originating in the frontal lobe. A variety of clinical syndromes exist depending on the exact localization of seizures and clinical semiology of the seizure type. Frontal lobe epilepsies have been divided into several specific syndromes including the syndrome of supplementary motor seizures, cingulate seizures, anterior frontal polar region seizures, orbital frontal seizures, dorsolateral seizures, opercular seizures, and seizures of the motor cortex. (05 Mar 2000) |
| frontal lobe of cerebrum | The portion of each cerebral hemisphere anterior to the central sulcus. Synonym: lobus frontalis cerebri, frontal lobe. (05 Mar 2000) |
| frontal margin | Edge of a bone which articulates with the frontal bone. See: frontal border of parietal bone, frontal border of sphenoid bone. Synonym: margo frontalis, frontal margin. (05 Mar 2000) |
| frontal nerve | <anatomy, nerve> A branch of the ophthalmic nerve which divides within the orbit into the supratrochlear and the supraorbital nerves. Synonym: nervus frontalis. (05 Mar 2000) |
| frontal notch | A small notch, sometimes a foramen, on the orbital margin of the frontal bone medial to the supraorbital notch. Synonym: incisura frontalis. (05 Mar 2000) |
| frontal part of corpus callosum | Frontal radiation of the corpus callosum; that part of the fibre radiation of the corpus callosum which bends forward toward the frontal pole of the cerebrum. Synonym: forceps minor, forceps anterior, frontal part of corpus callosum, pars frontalis corporis callosi. (05 Mar 2000) |
| frontal plane | A vertical plane at right angles to a sagittal plane, dividing the body into anterior and posterior portions. Synonym: frontal plane. (05 Mar 2000) |
| frontal plate | In the foetus, a cartilage plate between the lateral parts of ethmoid cartilage and the developing sphenoid bone. (05 Mar 2000) |
| frontal pole | The most anterior promontory of each cerebral hemisphere. Synonym: polus frontalis cerebri, frontal pole. (05 Mar 2000) |