| 单词 | pyramidal tract |
| 例句 | Excitatory pyramidal tract neurons, which reside in a region called layer 5 in the anterior lateral motor cortex, communicate with other neurons located many thousands of cell diameters away by establishing physical contacts. Single-cell sequencing paints diverse pictures of the brain 2018-10-30T04:00:00Z The direct pyramidal tracts occur only in man and man-like apes. Being Well-Born An Introduction to Eugenics 2012-05-22T15:16:53.140Z It seems to produce a sclerosis of the pyramidal tracts of the cord. New, Old, and Forgotten Remedies: Papers by Many Writers 2012-02-05T03:00:10Z They included portions of all the tracts, the pyramidal tract as well. Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. 2011-10-11T02:01:07.890Z In some so much of the pyramidal tract remains uncrossed that there may be decided weakness on the same side as the lesion in the brain. Psychotherapy 2011-06-19T02:00:20.053Z In the reflex, the lower center is aroused by a sensory nerve, and in the voluntary movement by the pyramidal tract. Psychology A Study Of Mental Life The pyramidal tract conveys impulses that inhibit muscle tonus, while the rubro-spinal tract is the path by which excitatory impulses travel. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. These are cerebral influences acting by way of the pyramidal tract upon the spinal center for the reflex. Psychology A Study Of Mental Life Injury to the motor area or to the pyramidal tract does not destroy reflex movement, but cuts off all voluntary movement and cerebral control. Psychology A Study Of Mental Life The upper part of this path, consisting of axons issuing from the giant pyramids of the motor area and extending down into the spinal cord, is the pyramidal tract. Psychology A Study Of Mental Life The motor area of the brain has no direct connection with any muscle, but acts through the pyramidal tract on the lower centers, which in turn act on the muscles. Psychology A Study Of Mental Life The pyramidal tract is the more important clinically. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The "Motor path" is the pyramidal tract, only the beginning of which is shown here, its further course being indicated in Fig. Psychology A Study Of Mental Life From the internal capsule, the motor fibres pass as the pyramidal tract through the crusta of each crus cerebri, the pons and the medulla oblongata. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The remaining fibres pass down as the direct pyramidal tract, and decussate in the cord near their termination. Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. The lower center can be aroused in quite another way, and that is by nerve currents coming from the brain, by way of the motor area and the pyramidal tract. Psychology A Study Of Mental Life |
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