| optic lobe | In invertebrate zoology, a lateral lobe of the forebrain in certain arthropods. In vertebrate zoology, either of the corpora bigemina of lower vertebrates. (12 Dec 1998) |
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| ear lobe | The lowest part of the auricle; it consists of fat and fibrous tissue not reinforced by the auricular cartilage. Synonym: lobulus auriculae, lobule of auricle. (05 Mar 2000) |
| ear lobe crease | A diagonal crease found on one or both earlobes with a possible connection to coronary heart disease in males. (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) |
| falciform lobe | cingulate gyrus |
| upper lobe of lung | The lobe of the right lung that lies above the oblique and horizontal fissures and includes the apical, posterior and anterior bronchopulmonary segments; in the left lung, the lobe lies above the oblique fissure and contains the apicoposterior, anterior, superior lingular and inferior lingular segments. Synonym: lobus superior pulmonis, upper lobe of lung. (05 Mar 2000) |
| upper/lower lobe predominance | <radiology> Upper lobe, usually site of greatest disease due to poorer clearance, bronchogenic carcinoma, pneumoconioses, histiocytosis X, sarcoidosis, ankylosing spondylitis, lower lobe, scleroderma (12 Dec 1998) |
| flocculonodular lobe | The small posterior and inferior subdivision of the cerebellar cortex that borders the line of attachment of the choroid roof of the rhomboid fossa, and consists of the left and right flocculus together with the unpaired nodulus (the most posterior of the folia composing the vermis cerebelli). Its major afferent connections come from the vestibular nuclei and directly from the vestibular nerve; it projects largely to the vestibular nuclei, directly and by way of the fastigial nucleus. (05 Mar 2000) |
| left duct of caudate lobe | A tributary to the left hepatic duct draining bile from the left half of the caudate lobe. Synonym: ductus lobi caudati sinister. (05 Mar 2000) |
| left lobe | The left subdivision of several glands, e.g., prostate, thyroid, thymus. Synonym: lobus sinister. (05 Mar 2000) |
| frontal lobe | The frontal lobes are responsible for higher cognitive thought processes. (27 Sep 1997) |
| left lobe of liver | It is separated from the right lobe above and in front by the falciform ligament, and from the quadrate and caudate lobes by the fissure for the ligamentum teres and the fissure for the ligamentum venosum; the distribution of the portal vein, hepatic artery, and bile ducts does not correspond to the gross lobar divisions of the liver. It contains two segments, superior and inferior. Synonym: lobus hepatis sinister. (05 Mar 2000) |
| 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) |
| limbic lobe | As originally defined by P. Broca: the nearly closed ring of the brain structures surrounding the hilus, or margin, of the cerebral hemisphere of mammals; it is composed of the fornicate gyrus (cingulate gyrus and parahippocampal gyrus), the hippocampus, and the amygdala. See: limbic system. (05 Mar 2000) |