| 词汇 | diencephalon |
| 释义 | diencephalon noun[ Cusually singular ] anatomy specializeduk /ˌdaɪ.enˈsef.ə.lɒn//ˌdaɪ.enˈkef.ə.lɒn/ us /ˌdaɪ.enˈsef.ə.lɑːn/pluraldiencephallauk /ˌdaɪ.enˈsef.ə.lə/ us /ˌdaɪ.enˈsef.ə.lə/ the back part of the forebrain(= the front of three main parts of the brain) that sends signals between the body's nervous system and glands(= organs in the body that produce liquid chemicals): The pituitary is controlled by the diencephalon. It has long been known that the content of sugar in the blood is regulated by the hypothalamus, located in the diencephalon. Normal sleep is controlled in the upper brain stem and diencephalon. In all vertebrates, the retina projects to multiple targets in the diencephalon and mesencephalon, which are interconnected. Many ascending and descending pathways pass through the diencephalon on their way to or from the telencephalon. The brain & nervous system abducens nerve abducent nerve accessory nerve alexithymia allism grey matter hemispheric hemispherical hindbrain hippocampus neurogenic neurogenically neuroglia neuroglial neurohormonal reticular formation rhinencephalon rhombencephalon right brain right-brained Examples of diencephalondiencephalon Manual editing of the segmented images was necessary only to remove the brainstem (from below a line parallel to the base of the cerebellum) from the diencephalon and cerebral hemispheres. They are widely distributed not only in the brainstem and diencephalon but also scattered throughout the cerebral cortex, with a predilection for frontal, anterior cingulate, insular and temporal regions. The degree to which the diencephalon is elaborated varies considerably across cartilaginous fishes, however, making comparisons and the identification of nuclei within particular species somewhat challenging. Necdin is detected in all developing neurons of the embryonic mouse, in both the central and peripheral nervous system, with the highest expression levels in the diencephalon and the hindbrain. Olfaction is distinct from the other sensory systems where peripheral sensory receptors have a relay in the diencephalon. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Above the monoaminergic nuclei in the brain stem (mesencephalic or midbrain region) is the diencephalon. Manual editing of the segmented images was necessary only to remove brainstem from the cerebral hemispheres and diencephalon. Section 7.1 studied an intermediate embryonic stage to illuminate the relationship between the diencephalon and the telencephalic vesicles. We defined a nonlimbic "brain core" consisting of the striatum, diencephalon, medulla, and mesencephalon. Unfortunately, the appellation of anterior entopeduncular nucleus has been applied to two other groups of cells in the diencephalon of various reptiles. The telencephalic factor has the striatum and diencephalon as secondary structures, the olfactory factor has the paleocortex, and the somatic factor has the medulla. Cerebellar projections compared with those of the ascending somatic sensory pathways in lateral diencephalon. At this age the prosencephalon has become divided into the telencephalon and diencephalon, and the rhombencephalon has become divided into the metencephalon and myelencephalon. Brain side was a significant factor for the telencephalon and diencephalon only (see also table 4c). Larvae were assigned to one of five regions in the brain + the telencephalon, diencephalon, cerebellum, medulla, pons and brain stem and the olfactory bulb. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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