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单词 acervulus cerebri
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acervulus cerebri
1. Anatomy. More fully acervulus cerebri: a collection of small calcified concretions situated within or near the pineal body; = brain sand n. at brain n. Compounds 2. In later use also: an individual concretion of this kind.
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the world > life > the body > nervous system > cerebrospinal axis > brain > [noun] > substances of
medulla?a1425
pith1594
acervulus cerebri1791
brain sand1831
oleophosphoric acid1839
wetware1963
1791 W. Vaughan Expos. Princ. Anat. & Physiol. II. 46 Near the base of this gland, or within it, from the fourteenth year, is a little heap of stones..; the larger stones are generally in the middle surrounded by the smaller, so that it is properly enough called Acervulus.
1800 A. Fyfe Compend. Anat. Human Body for Use Students II. iv. 22 Near, or in the Substance of the Pineal Gland, small Calcareous Concretions are sometimes found, called, by Soemmerring, Acervulus Cerebri, from their being generally found collected in a heap.
1839 Brit. & Foreign Med. Rev. 7 505 If the globules of the acervulus be subjected to the action of muriatic acid, carbonic acid is evolved.
1882 Quain's Elements Anat. (ed. 9) II. 327 The follicles [of the pineal]..often contain..much gritty calcareous matter (acervulus cerebri, brain sand), composed of microscopic particles.
1970 T. S. Leeson & C. R. Leeson Histology (ed. 2) xvii. 414/1 Acervuli (brain sand or corpora arenacea) are concretions which appear mainly in the capsule and septa.
2005 Jrnl. Neurol. Sci. 238 Suppl. S495/1 Histological methods..were used to study epiphysis morphology and distribution of the brain sand (corpora arenacea, acervulus).
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