sacrum


sacrum
/sak"reuhm, say"kreuhm/, n., pl. sacra /sak"reuh, say"kreuh/. Anat.
a bone resulting from the fusion of two or more vertebrae between the lumbar and the coccygeal regions, in humans being composed usually of five fused vertebrae and forming the posterior wall of the pelvis. See diag. under pelvis.
[1745-55; < LL (os) sacrum holy (bone), trans. of Gk hieròn ostéon]

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      wedge-shaped triangular bone at the base of the vertebral column, above the caudal (tail) vertebrae, or coccyx, that articulates (connects) with the pelvic girdle. In humans it is usually composed of five vertebrae, which fuse in early adulthood. The top of the first (uppermost) sacral vertebra articulates with the last (lowest) lumbar vertebra. The transverse processes of the first three sacral vertebrae are fused to form wide lateral wings, or alae, and articulate with the centre-back portions of the blades of the ilia to complete the pelvic girdle. The sacrum is held in place in this joint, which is called the sacroiliac, by a complex mesh of ligaments. Between the fused transverse processes of the lower sacral vertebrae, on each side, are a series of four openings (sacral foramina); the sacral nerves and blood vessels pass through these openings. A sacral canal running down through the centre of the sacrum represents the end of the vertebral canal; the functional spinal cord ends at about the level of the first sacral vertebra, but its continuation, the filum terminale, can be traced through the sacrum to the first coccygeal vertebra. See also vertebral column.

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Universalium. 2010.

Look at other dictionaries:

  • sacrum — [ sakrɔm ] n. m. • 1793; os sacrum av. 1478 « os sacré », parce qu il était offert aux dieux dans les sacrifices d animaux ♦ Anat. Os formé par la réunion des cinq vertèbres sacrées, à la partie inférieure de la colonne vertébrale, articulé avec… …   Encyclopédie Universelle

  • Sacrum — Sacrum. Vue antérieure. Sacrum. Vue postérieure. Le sacrum est un os …   Wikipédia en Français

  • sacrum — SÁCRUM s.n. Os triunghiular (format din cinci vertebre sudate) aşezat în partea de jos a coloanei vertebrale şi care, împreună cu oasele pelviene, formează bazinul. [var.: sácru s.n.] – Din fr., lat. sacrum. Trimis de ana zecheru, 07.05.2003.… …   Dicționar Român

  • sacrum — bone at the base of the spine, 1753, from L.L. os sacrum sacred bone, from L. os bone + sacrum, neuter of sacer sacred (see SACRED (Cf. sacred)). Said to be so called because the bone was the part of animals that was offered in sacrifices.… …   Etymology dictionary

  • Sacrum — Sa crum, n.; pl. {sacra}. [NL., fr. L. sacer sacred, os sacrum the lowest bone of the spine.] (Anat.) That part of the vertebral column which is directly connected with, or forms a part of, the pelvis. [1913 Webster] Note: It may consist of a… …   The Collaborative International Dictionary of English

  • Sacrum — (Os sacrum), das Kreuzbein (s. d. und Wirbelsäule) …   Meyers Großes Konversations-Lexikon

  • sacrum — sacrum; syn·sacrum; …   English syllables

  • sacrum — {{/stl 13}}{{stl 7}}[wym. sakrum] {{/stl 7}}{{stl 8}}rz. n ndm, blm {{/stl 8}}{{stl 7}} sfera rzeczy, zjawisk, spraw świętych przeciwstawiona sferze profanum (obejmującej rzeczy, zjawiska, sprawy świeckie) : {{/stl 7}}{{stl 10}}Zaliczać jakieś… …   Langenscheidt Polski wyjaśnień

  • sacrum — ► NOUN (pl. sacra or sacrums) Anatomy ▪ a triangular bone in the lower back formed from fused vertebrae and situated between the two hip bones of the pelvis. ORIGIN from Latin os sacrum sacred bone (from the belief that the soul resides in it) …   English terms dictionary

  • sacrum — [sā′krəm, sak′rəm] n. pl. sacra [sā′krə, sā′rə] or sacrums [ModL < LL (os) sacrum, lit., sacred (bone), transl. of Gr hieron osteon < hieron, sacred, ? last (< hieros: see HIERO ) + osteon: see OSSIFY] a thick, triangular bone situated… …   English World dictionary

  • Sacrum os — (Anat.), das Kreuzbein …   Pierer's Universal-Lexikon


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