English > thalmencephalon: 1 sense > noun 1, body| Meaning | The posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon. |
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| Synonyms | diencephalon, interbrain, betweenbrain |
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| Part of | forebrain, prosencephalon | The anterior portion of the brain |
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| Parts | basal ganglion | Any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement |
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| hypothalamus | A basal part of the diencephalon governing autonomic nervous system |
| infundibulum | Any of various funnel-shaped parts of the body (but especially the hypophyseal stalk) |
| mamillary body, mammillary body, corpus mamillare | One of two small round structures on the undersurface of the brain that form the terminals of the anterior arches of the fornix |
| optic nerve, nervus opticus, second cranial nerve, optic tract | The cranial nerve that serves the retina |
| pituitary, pituitary gland, pituitary body, hypophysis | The master gland of the endocrine system |
| thalamus | large egg-shaped structures of grey matter that form the dorsal subdivision of the diencephalon |
| third eye, pineal eye | A sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles |
| Broader | neural structure | A structure that is part of the nervous system |
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| Spanish | diencéfalo, interbrain |
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| Catalan | diencèfal, interbrain |
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