mesencephalonn.

Brit.

/ˌmɛsɛnˈsɛfəlɒn/,

/ˌmɛsɛnˈsɛfl̩ɒn/,

/ˌmɛsɛnˈkɛfəlɒn/,

/ˌmɛsɛnˈkɛfl̩ɒn/, U.S.

/ˌmɛzənˈsɛfəl(ə)n/; see also meso- comb. form.

Origin: Formed within English, by compounding. Etymons: meso- comb. form, encephalon n.

Etymology: < meso- comb. form + encephalon n. Compare earlier mesocephale n., mesencephal n. N.E.D. (1906) gives only the pronunciation (mesense·fălǫn) /mɛsɛnˈsɛfəlɒn/.

Anatomy and Zoology.

The middle part of the developing brain; (now) spec. the midbrain; the part of the brainstem derived from the middle cerebral vesicle of the embryo, consisting of the crura cerebri, tegmenta, tectum, and cerebral aqueduct.

ΘΚΠ

the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > regions of brain

mesencephal1839

mesocephale1839

mesencephalon1846

prosencephalon1846

mesocephalon1857

midbrain1864

metencephalon1867

brain mantle1874

thalamencephalon1875

procerebrum1884

metepencephalon1885

thalamencephal1891

telencephalon1893

rhombencephalon1895

pretectum1961

1846 R. Owen Lect. Compar. Anat. Vertebr. Animals 177 The next succeeding primary division of the brain, is called the ‘mesencephalon’.

1875 T. H. Huxley in Encycl. Brit. I. 767/1 The mesencephalon is divided above..into two optic lobes.

1936 S. R. Detwiler Neuroembryol. ix. 119 In later experiments..Nicholas removed the embryonic mesencephalon.

1977 Lancet 9 July 64/1 There was no injury to the mesencephalon in 3 cases, while the telencephalon escaped injury in 2 cases.

1999 Development 126 3533 The prosencephalon, or embryonic forebrain, grows within a mesenchymal matrix of local paraxial mesoderm and of neural crest cells (NCC) derived from the posterior diencephalon and mesencephalon.

This entry has been updated (OED Third Edition, September 2001; most recently modified version published online March 2022).

单词	mesencephalon
释义	mesencephalonn. Brit. /ˌmɛsɛnˈsɛfəlɒn/, /ˌmɛsɛnˈsɛfl̩ɒn/, /ˌmɛsɛnˈkɛfəlɒn/, /ˌmɛsɛnˈkɛfl̩ɒn/, U.S. /ˌmɛzənˈsɛfəl(ə)n/; see also meso- comb. form. Origin: Formed within English, by compounding. Etymons: meso- comb. form, encephalon n. Etymology: < meso- comb. form + encephalon n. Compare earlier mesocephale n., mesencephal n. N.E.D. (1906) gives only the pronunciation (mesense·fălǫn) /mɛsɛnˈsɛfəlɒn/. Anatomy and Zoology. The middle part of the developing brain; (now) spec. the midbrain; the part of the brainstem derived from the middle cerebral vesicle of the embryo, consisting of the crura cerebri, tegmenta, tectum, and cerebral aqueduct. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > regions of brain mesencephal1839 mesocephale1839 mesencephalon1846 prosencephalon1846 mesocephalon1857 midbrain1864 metencephalon1867 brain mantle1874 thalamencephalon1875 procerebrum1884 metepencephalon1885 thalamencephal1891 telencephalon1893 rhombencephalon1895 pretectum1961 1846 R. Owen Lect. Compar. Anat. Vertebr. Animals 177 The next succeeding primary division of the brain, is called the ‘mesencephalon’. 1875 T. H. Huxley in Encycl. Brit. I. 767/1 The mesencephalon is divided above..into two optic lobes. 1936 S. R. Detwiler Neuroembryol. ix. 119 In later experiments..Nicholas removed the embryonic mesencephalon. 1977 Lancet 9 July 64/1 There was no injury to the mesencephalon in 3 cases, while the telencephalon escaped injury in 2 cases. 1999 Development 126 3533 The prosencephalon, or embryonic forebrain, grows within a mesenchymal matrix of local paraxial mesoderm and of neural crest cells (NCC) derived from the posterior diencephalon and mesencephalon. This entry has been updated (OED Third Edition, September 2001; most recently modified version published online March 2022). < n.1846
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