protovertebran.

Brit.

/ˌprəʊtəʊˈvəːtᵻbrə/, U.S.

/ˌproʊdoʊˈvərdəbrə/

Origin: Formed within English, by compounding. Etymons: proto- comb. form, vertebra n.

Etymology: < proto- comb. form + vertebra n. In sense 1 after German Urwirbel ( C. G. Carus Ur-theilen des Knochen- und Schalengerustes (1828) 47).

†1. Zoology. In the morphological theory of C. G. Carus: a rib, considered as an element of the first set of ‘vertebrae’ (the vertebrae and the limb bones being considered the second and third sets respectively). Obsolete.

ΚΠ

1861 New Amer. Cycl. XIII. 253/2 He [sc. Carus] makes what he calls proto-, deuto-, and trito-vertebræ; the 1st (ribs) enveloping the body and its viscera in relation with vegetative life; the 2d (vertebræ) protecting the nervous system; and the 3d (limbs) becoming the osseous framework which sustains the muscular and locomotive organs.

2. Embryology. Each of the segments of the embryonic mesoderm which subsequently develop into the vertebrae and associated muscles. Formerly also: †a myotome, regarded as having a similar role (obsolete). Now rare.

ΘΚΠ

the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > regions

segment1826

lateral plate1859

protovertebra1869

mesomere1902

organizator1924

organizer1925

field1927

organization centre1928

inductor1929

1869 Gray's Anat. (ed. 5) 92 (caption) 10. Chorda dorsalis. 11. Vertebral laminæ. 12. Protovertebræ proper. 13. Muscular laminæ.

1881 St. G. Mivart Cat 325 On each side of the medullary groove and notochord a series of quadrate thickenings appear, termed protovertebræ.

1890 J. S. Billings National Med. Dict. II Protovertebra, primitive segment of the mesoderm; myotome. When the name was given the myotomes were supposed to be the rudiments of the vertebræ.

1943 Amer. Jrnl. Orthodontics & Oral Surg. 29 253-276 The blastopore gives rise to the primitive streak as well as to the neural folds and provertebrae.

1977 Archives d'Anatomie Microscopique 65 139 No histological..alterations were found at the stages when provertebrae were formed.

Derivatives

† protovertebral adj. Obsolete

ΚΠ

1870 Gray's Anat. (new Amer. ed.) 100 The ganglia appear to be developed from the protovertebral disks.

1890 J. S. Billings National Med. Dict. II Protovertebral column or plate, a thick column of cells lying along the medullary groove, from which by segmentation the protovertebræ are formed.

This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).

单词	protovertebra
释义	protovertebran. Brit. /ˌprəʊtəʊˈvəːtᵻbrə/, U.S. /ˌproʊdoʊˈvərdəbrə/ Origin: Formed within English, by compounding. Etymons: proto- comb. form, vertebra n. Etymology: < proto- comb. form + vertebra n. In sense 1 after German Urwirbel ( C. G. Carus Ur-theilen des Knochen- und Schalengerustes (1828) 47). †1. Zoology. In the morphological theory of C. G. Carus: a rib, considered as an element of the first set of ‘vertebrae’ (the vertebrae and the limb bones being considered the second and third sets respectively). Obsolete. ΚΠ 1861 New Amer. Cycl. XIII. 253/2 He [sc. Carus] makes what he calls proto-, deuto-, and trito-vertebræ; the 1st (ribs) enveloping the body and its viscera in relation with vegetative life; the 2d (vertebræ) protecting the nervous system; and the 3d (limbs) becoming the osseous framework which sustains the muscular and locomotive organs. 2. Embryology. Each of the segments of the embryonic mesoderm which subsequently develop into the vertebrae and associated muscles. Formerly also: †a myotome, regarded as having a similar role (obsolete). Now rare. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > embryo or fetus > embryo parts > [noun] > regions segment1826 lateral plate1859 protovertebra1869 mesomere1902 organizator1924 organizer1925 field1927 organization centre1928 inductor1929 1869 Gray's Anat. (ed. 5) 92 (caption) 10. Chorda dorsalis. 11. Vertebral laminæ. 12. Protovertebræ proper. 13. Muscular laminæ. 1881 St. G. Mivart Cat 325 On each side of the medullary groove and notochord a series of quadrate thickenings appear, termed protovertebræ. 1890 J. S. Billings National Med. Dict. II Protovertebra, primitive segment of the mesoderm; myotome. When the name was given the myotomes were supposed to be the rudiments of the vertebræ. 1943 Amer. Jrnl. Orthodontics & Oral Surg. 29 253-276 The blastopore gives rise to the primitive streak as well as to the neural folds and provertebrae. 1977 Archives d'Anatomie Microscopique 65 139 No histological..alterations were found at the stages when provertebrae were formed. Derivatives † protovertebral adj. Obsolete ΚΠ 1870 Gray's Anat. (new Amer. ed.) 100 The ganglia appear to be developed from the protovertebral disks. 1890 J. S. Billings National Med. Dict. II Protovertebral column or plate, a thick column of cells lying along the medullary groove, from which by segmentation the protovertebræ are formed. This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022). < n.1861
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