| 词汇 | pyramidal-tract |
| 语种 | 英语、汉语、英汉翻译、汉英翻译 |
| 释义 | pyramidal tract noun[ C ] anatomy specializeduk /pɪˈræm.ɪ.dəl ˌtrækt/ us /pəˈræm.ə.dəl ˌtrækt/ any of four sets of nerves that carry signals from the cerebral cortex of the brain through the brain stem to the spinal cord, and help control movement: This can be a consequence of pyramidal tract damage or cerebral dysfunction. It is an abnormal reflex found in patients with damaged pyramidal tracts of the brain. Knee and ankle jerks are exaggerated in pyramidal tract lesion. Because the pyramidal tract matures early, articulatory skills are not plastic at later ages. Patients with fluent aphasia tend not to have an associated hemiparesis since the pyramidal tract is not involved. The brain & nervous system abducens nerve abducent nerve accessory nerve alexithymia allism glossopharyngeal nerve grey matter hemispheric hemispherical hindbrain neurofibrillary neurogenic neurogenically neuroglia neuroglial reticular formation rhinencephalon rhombencephalon right brain right-brained |
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