quadratusn.

Brit.

/kwɒˈdreɪtəs/, U.S.

/ˌkwɑˈdreɪdəs/

Origin: A borrowing from Latin. Etymon: Latin quadratus.

Etymology: < post-classical Latin quadratus (1590), use as noun (short for quadratus musculus ) of classical Latin quadrātus quadrate adj.

Anatomy and Zoology.

Any of various muscles that are more or less square in shape; esp. (a) (more fully quadratus lumborum) a muscle of the back that arises from the iliac crest and lower lumbar vertebrae and inserts on the twelfth rib and upper lumbar vertebrae, serving to abduct the trunk; (b) (more fully quadratus femoris) a muscle that arises from the tuberosity of the ischium and inserts upon the intertrochanteric ridge of the femur, serving to rotate the thigh laterally. Also quadratus muscle.

ΘΚΠ

the world > life > the body > structural parts > muscle > types of muscles > [noun]

sphincter1578

raiser1588

in-muscle?1609

oblique1612

abducens1615

abductor1615

adductor1615

antagonist1615

bender1615

depressor1615

extender1615

flexor1615

levator1615

quadratus1615

rectus1615

retractor1615

sphincter-muscle1615

accelerator1638

bicepsa1641

elevator1646

adducent1649

lifter1649

rotator1657

flector1666

contractor1682

dilater1683

orbicularis palpebrarum1694

transverse muscle1696

tensor muscle1704

biventer1706

extensor1713

attollent1728

constrictor1741

dilator1741

risibles1785

orbicularis oculi1797

obliquus1799

erector1828

extensor-muscle1830

compressor1836

trans-muscle1836

antagonizer1844

motor1846

evertor1848

inflector1851

protractor1853

prime mover1860

orbicular1872

transversalis1872

invertor1875

skeletal muscle1877

dilatator1878

occlusor muscle1878

sphincter1879

pilomotor1892

agonist1896

1615 H. Crooke Μικροκοσμογραϕια iii. xviii. 154 At the sides of the loynes on either hand is a portion of the broade muscle called Latissimus,..vnder which lyeth the square muscle called Quadratus, which is the first muscle of the back.

1615 H. Crooke Μικροκοσμογραϕια x. xiii. 754 Muscles..common to the Cheekes and the Lippes are foure, two on either side called Quadratus and Buccinator, the square muscle and the Trumpeter.

1722 W. Cheselden Anat. Humane Body (ed. 2) iii. 99 Quadratus Lumborum, arises from the upper part of the Spine of the Ilium.

1756 G. Douglas tr. J. B. Winslow Anat. Expos. Struct. Human Body (ed. 4) I. 211 A tendon..inserted between the Gemelli and Quadratus.

1847–9 Todd's Cycl. Anat. & Physiol. IV. i. 767/2 The nerves for the gemelli and quadratus femoris pass from the plexus along the lower part of the pyriformis.

1870 G. Rolleston Forms Animal Life 3 The two psoas muscles and the quadratus lumborum.

1939 T. L. Green Pract. Animal Biol. i. 208 The quadratus arising along the dorsal edge of the eyeball.

1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) ix. 297 In mammals, the obturator externus is essentially homologous, but the quadratus femoris is a separate fraction of this same muscle group.

1995 GQ Jan. 131/1 The principal muscles that comprise your abdominals are: rectus abdominis, quadratus lumborum and the internal and external obliques.

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

单词	quadratus
释义	quadratusn. Brit. /kwɒˈdreɪtəs/, U.S. /ˌkwɑˈdreɪdəs/ Origin: A borrowing from Latin. Etymon: Latin quadratus. Etymology: < post-classical Latin quadratus (1590), use as noun (short for quadratus musculus ) of classical Latin quadrātus quadrate adj. Anatomy and Zoology. Any of various muscles that are more or less square in shape; esp. (a) (more fully quadratus lumborum) a muscle of the back that arises from the iliac crest and lower lumbar vertebrae and inserts on the twelfth rib and upper lumbar vertebrae, serving to abduct the trunk; (b) (more fully quadratus femoris) a muscle that arises from the tuberosity of the ischium and inserts upon the intertrochanteric ridge of the femur, serving to rotate the thigh laterally. Also quadratus muscle. ΘΚΠ the world > life > the body > structural parts > muscle > types of muscles > [noun] sphincter1578 raiser1588 in-muscle?1609 oblique1612 abducens1615 abductor1615 adductor1615 antagonist1615 bender1615 depressor1615 extender1615 flexor1615 levator1615 quadratus1615 rectus1615 retractor1615 sphincter-muscle1615 accelerator1638 bicepsa1641 elevator1646 adducent1649 lifter1649 rotator1657 flector1666 contractor1682 dilater1683 orbicularis palpebrarum1694 transverse muscle1696 tensor muscle1704 biventer1706 extensor1713 attollent1728 constrictor1741 dilator1741 risibles1785 orbicularis oculi1797 obliquus1799 erector1828 extensor-muscle1830 compressor1836 trans-muscle1836 antagonizer1844 motor1846 evertor1848 inflector1851 protractor1853 prime mover1860 orbicular1872 transversalis1872 invertor1875 skeletal muscle1877 dilatator1878 occlusor muscle1878 sphincter1879 pilomotor1892 agonist1896 1615 H. Crooke Μικροκοσμογραϕια iii. xviii. 154 At the sides of the loynes on either hand is a portion of the broade muscle called Latissimus,..vnder which lyeth the square muscle called Quadratus, which is the first muscle of the back. 1615 H. Crooke Μικροκοσμογραϕια x. xiii. 754 Muscles..common to the Cheekes and the Lippes are foure, two on either side called Quadratus and Buccinator, the square muscle and the Trumpeter. 1722 W. Cheselden Anat. Humane Body (ed. 2) iii. 99 Quadratus Lumborum, arises from the upper part of the Spine of the Ilium. 1756 G. Douglas tr. J. B. Winslow Anat. Expos. Struct. Human Body (ed. 4) I. 211 A tendon..inserted between the Gemelli and Quadratus. 1847–9 Todd's Cycl. Anat. & Physiol. IV. i. 767/2 The nerves for the gemelli and quadratus femoris pass from the plexus along the lower part of the pyriformis. 1870 G. Rolleston Forms Animal Life 3 The two psoas muscles and the quadratus lumborum. 1939 T. L. Green Pract. Animal Biol. i. 208 The quadratus arising along the dorsal edge of the eyeball. 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) ix. 297 In mammals, the obturator externus is essentially homologous, but the quadratus femoris is a separate fraction of this same muscle group. 1995 GQ Jan. 131/1 The principal muscles that comprise your abdominals are: rectus abdominis, quadratus lumborum and the internal and external obliques. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online June 2022). < n.1615
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