Knowledge

Maxilla

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The maxillary sinus presents the appearance of a furrow on the lateral wall of the nose. In the adult the vertical diameter is the greatest, owing to the development of the alveolar process and the increase in size of the sinus.
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and unite in the beginning of the third month, but the suture between the two portions persists on the palate until nearly middle life. Mall states that the frontal process is developed from both centers.
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lies between the palatine and premaxillary centers and beneath the vomer; this center, together with the corresponding center of the opposite bone, separates the incisive canals from each other.
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The maxillary sinus appears as a shallow groove on the nasal surface of the bone about the fourth month of development, but does not reach its full size until after the second dentition.
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Sometimes (e.g. in bony fish), the maxilla is called "upper maxilla", with the mandible being the "lower maxilla". Conversely, in birds the upper jaw is often called "upper mandible".
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forms that portion of the body of the bone which lies medial to the infraorbital canal, including the medial part of the floor of the orbit and the lateral wall of the nasal cavity.
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The frontal process is well-marked and the body of the bone consists of little more than the alveolar process, the teeth sockets reaching almost to the floor of the orbit.
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The maxilla is a paired bone - the two maxillae unite with each other at the intermaxillary suture. The maxilla consists of:
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of the maxillae holds the upper teeth, and is referred to as the maxillary arch. Each maxilla attaches laterally to the
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is developed the palatine process posterior to the incisive canal together with the adjoining part of the nasal wall.
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forms the incisive bone which carries the incisor teeth and corresponds to the premaxilla of the lower vertebrates.
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gives origin to the portion which lies lateral to the infraorbital canal, including the zygomatic process.
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At birth the transverse and antero-posterior diameters of the bone are each greater than the vertical.
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formed from the fusion of two maxillary bones. In humans, the upper jaw includes the
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Knowledge articles incorporating text from the 20th edition of Gray's Anatomy (1918)
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This article is about the maxilla in vertebrates. For arthropod maxillae, see
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do not have a maxilla in the strict sense; the corresponding part of their
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Sometimes it articulates with the orbital surface, and sometimes with the
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gives rise to the frontal process and the portion above the canine tooth.
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The maxilla was formerly described as ossifying from six centers, viz.:
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In most vertebrates, the foremost part of the upper jaw, to which the
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centers only, one for the maxilla proper and one for the premaxilla.
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are attached in mammals consists of a separate pair of bones, the
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Each maxilla assists in forming the boundaries of three cavities:
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Each maxilla also enters into the formation of two fossae: the
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A maxilla fracture is often the result of 488:, as well as the maxilla of the other side. 1481: 1467: 1152: 1138: 769:with the bone found in other vertebrates. 456:Each maxilla articulates with nine bones: 148: 136: 1019: 1002:"Some Notes on the Epiphyses of the Ribs" 116:Learn how and when to remove this message 1159: 944:Illustrated Anatomy of the Head and Neck 912:Illustrated Anatomy of the Head and Neck 677: 611: 514: 506: 357: 999: 2100: 838:This article incorporates text in the 1462: 1133: 523:The maxilla is ossified in membrane. 1126:at the SUNY Downstate Medical Center 1041: 1039: 966: 937: 935: 933: 931: 772: 519:Inferior surface of maxilla at birth 511:Anterior surface of maxilla at birth 54:adding citations to reliable sources 25: 1278:Levator palpebrae superioris muscle 713: 310:) is the upper fixed (not fixed in 269: 13: 1083:(6th ed.). St. Louis: Mosby. 1068: 641:the floor and lateral wall of the 14: 2144: 1117: 1036: 1007:Journal of Anatomy and Physiology 928: 896:Merriam-Webster Online Dictionary 592: 420:Features of the maxilla include: 2085: 832: 791: 779: 451: 277: 30: 416:the anterior, posterior, medial 41:needs additional citations for 1443:Suspensory ligament of eyeball 993: 960: 903: 889: 875: 858: 798:Skull. Maxilla shown in white. 786:Skull. Maxilla shown in green. 502: 1: 827: 21:Maxilla (arthropod mouthpart) 1253:Trochlea of superior oblique 910:Fehrenbach; Herring (2012). 871:University of North Carolina 350: 7: 974:American Journal of Anatomy 846:of the 20th edition of 803: 607: 362:Inferior surface of maxilla 10: 2149: 2113:Bones of the head and neck 967:Mall, Franklin P. (1906). 807: 345: 18: 2030: 1973: 1911: 1875:Mandibular incisive canal 1835: 1826: 1796: 1756: 1735: 1726: 1683: 1658: 1597: 1510: 1501: 1401: 1356:Accessory lacrimal glands 1331: 1288:Medial palpebral ligament 1268: 1218: 1172: 334:. This is similar to the 242: 230: 218: 206: 194: 182: 177: 164: 159: 147: 135: 130: 2043:Posterior lacrimal crest 1124:Anatomy photo:22:os-1901 1000:Fawcett, Edward (1911). 914:. Elsevier. p. 55. 244:Anatomical terms of bone 154:Animation of the maxilla 1618:Anterior lacrimal crest 1260:Inferior oblique muscle 1248:Superior oblique muscle 493:lateral pterygoid plate 412:It has three surfaces: 142:Position of the maxilla 1782:Sphenopalatine foramen 1778:Greater palatine canal 1589:Greater palatine canal 1233:Inferior rectus muscle 1228:Superior rectus muscle 987:10.1002/aja.1000050403 810:anatomical terminology 708:Le Fort classification 617: 520: 512: 363: 1998:Inferior nasal concha 1855:Mandibular prominence 1768:Posterior nasal spine 1743:Pterygopalatine fossa 1238:Lateral rectus muscle 817:Maxillofacial surgery 678:Clinical significance 615: 518: 510: 486:inferior nasal concha 361: 1859:Mandibular symphysis 1649:Anterior nasal spine 1562:Maxillary tuberosity 1546:Anterior nasal spine 1536:Infraorbital foramen 1243:Medial rectus muscle 704:automobile accidents 536:prenatal development 340:mandibular symphysis 332:anterior nasal spine 326:in the front of the 50:improve this article 2133:Otorhinolaryngology 2128:Human mouth anatomy 1897:Submandibular fovea 1867:Mental protuberance 1774:Perpendicular plate 1573:Infraorbital groove 1341:Lacrimal canaliculi 1048:The Vertebrate Body 426:infraorbital sulcus 369:body of the maxilla 1936:Mandibular foramen 1707:Zygomaticotemporal 1697:Zygomatico-orbital 1641:Foramina of Scarpa 1578:Infraorbital canal 1333:Lacrimal apparatus 886:2nd edition, 1989. 869:—Embryo Images at 808:This article uses 759:Cartilaginous fish 618: 563:From a third, the 521: 513: 364: 2073: 2072: 2008:Maxillary process 2003:Ethmoidal process 1986:Internasal suture 1969: 1968: 1956:Condyloid process 1822: 1821: 1679: 1678: 1605:Zygomatic process 1456: 1455: 1426:Plica semilunaris 1393:Nasolacrimal duct 1346:Lacrimal caruncle 1313:Palpebral fissure 1077:Du Brul, E. Lloyd 1014:(Pt 2): 172–178. 953:978-0-323-39634-9 921:978-1-4377-2419-6 773:Additional images 584:And a sixth, the 387:zygomatic process 258: 257: 253: 126: 125: 118: 100: 2140: 2090: 2089: 2081: 2065:Retromolar space 2053:Lacrimal hamulus 1951:Mandibular notch 1946:Coronoid process 1924:Mandibular canal 1919:Mylohyoid groove 1893:Sublingual fovea 1881:internal surface 1843:external surface 1833: 1832: 1764:Horizontal plate 1733: 1732: 1717:Zygomaticofacial 1703:Temporal process 1633:Incisive foramen 1629:Palatine process 1624:Alveolar process 1508: 1507: 1483: 1476: 1469: 1460: 1459: 1383:Lacrimal punctum 1378:Lacrimal papilla 1366:Ciaccio's glands 1154: 1147: 1140: 1131: 1130: 1113: 1094: 1062: 1061: 1043: 1034: 1033: 1023: 997: 991: 990: 964: 958: 957: 939: 926: 925: 907: 901: 893: 887: 879: 873: 862: 836: 835: 795: 783: 765:bar that is not 714:In other animals 684:maxilla fracture 672:pterygomaxillary 668:inferior orbital 647:the wall of the 635:the roof of the 622:alveolar process 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796: 787: 784: 775: 716: 688:facial fracture 680: 660:pterygopalatine 628:(cheek bones). 626:zygomatic bones 610: 595: 505: 454: 440:maxillary sinus 393:frontal process 373:maxillary sinus 353: 348: 280: 276: 254: 155: 143: 122: 111: 105: 102: 59: 57: 47: 35: 24: 17: 12: 11: 5: 2146: 2136: 2135: 2130: 2125: 2120: 2118:Dental anatomy 2115: 2110: 2095: 2094: 2071: 2070: 2068: 2067: 2062: 2057: 2056: 2055: 2050: 2045: 2034: 2032: 2028: 2027: 2025: 2024: 2023: 2022: 2012: 2011: 2010: 2005: 1995: 1994: 1993: 1991:Nasal foramina 1988: 1977: 1975: 1971: 1970: 1967: 1966: 1964: 1963: 1958: 1953: 1948: 1943: 1938: 1933: 1932: 1931: 1926: 1915: 1913: 1909: 1908: 1906: 1905: 1903:Alveolar part 1900: 1889:Mylohyoid line 1878: 1871:Mental foramen 1839: 1837: 1830: 1824: 1823: 1820: 1819: 1817: 1816: 1811: 1806: 1800: 1798: 1794: 1793: 1791: 1790: 1785: 1771: 1760: 1758: 1754: 1753: 1751: 1750: 1745: 1739: 1737: 1730: 1724: 1723: 1721: 1720: 1710: 1700: 1689: 1687: 1681: 1680: 1677: 1676: 1674: 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988: 984: 980: 976: 975: 970: 963: 955: 949: 945: 938: 936: 934: 932: 923: 917: 913: 906: 900: 897: 892: 885: 884: 878: 872: 868: 867: 861: 857: 854: 853: 850: 847: 845: 841: 840:public domain 823: 820: 818: 815: 814: 811: 794: 789: 782: 777: 776: 770: 768: 764: 763:cartilaginous 760: 756: 754: 750: 746: 744: 740: 736: 732: 728: 724: 719: 711: 709: 705: 701: 697: 693: 692:facial trauma 689: 686:is a form of 685: 675: 673: 669: 665: 661: 657: 656:infratemporal 650: 646: 644: 640: 638: 634: 633: 632: 629: 627: 623: 614: 605: 601: 598: 587: 583: 580: 577:A fifth, the 576: 573: 572:premaxillary, 569: 566: 562: 559: 555: 552: 548: 547: 546: 543: 540: 537: 532: 530: 526: 517: 509: 500: 498: 494: 489: 487: 483: 479: 475: 471: 467: 463: 459: 452:Articulations 447: 443: 441: 437: 435: 431: 427: 423: 422: 421: 415: 414: 413: 406: 402: 400: 396: 394: 390: 388: 384: 383: 381: 377: 374: 370: 366: 365: 360: 356: 343: 341: 337: 333: 329: 325: 321: 317: 313: 307: 275: 267: 263: 251: 245: 241: 238: 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Saunders. 1099: 1081:Oral Anatomy 1080: 1047: 1011: 1005: 995: 978: 972: 962: 943: 911: 905: 898: 891: 881: 877: 864: 860: 851: 837: 831: 757: 747: 720: 717: 681: 653: 643:nasal cavity 630: 619: 602: 599: 596: 585: 578: 571: 564: 557: 551:orbitonasal, 550: 544: 541: 533: 528: 522: 490: 455: 419: 411: 368: 354: 273: 265: 259: 213:A02.1.12.001 188: 112: 103: 93: 86: 79: 72: 60: 48:Please help 43:verification 40: 2060:Prognathism 1788:Hard palate 1421:Conjunctiva 727:premaxillae 503:Development 480:bones, the 324:hard palate 312:Neopterygii 262:vertebrates 178:Identifiers 2102:Categories 1981:Nasal bone 1814:Sphenoidal 1614:Agger nasi 1438:Periorbita 828:References 767:homologous 735:amphibians 662:, and two 558:zygomatic, 76:newspapers 1804:Pyramidal 1797:Processes 1685:Zygomatic 1598:Processes 866:hednk-023 731:bony fish 565:palatine, 549:One, the 470:zygomatic 380:processes 351:Structure 166:Precursor 65:"Maxilla" 2038:Lacrimal 1828:Mandible 1728:Palatine 1518:Anterior 1511:Surfaces 1079:(1975). 1030:17232872 844:page 157 804:See also 743:nostrils 739:reptiles 723:incisors 696:violence 694:such as 664:fissures 608:Function 497:sphenoid 478:palatine 474:lacrimal 336:mandible 274:maxillae 2092:Anatomy 1929:Lingula 1809:Orbital 1569:Orbital 1503:Maxilla 1493:of the 1414:Unibrow 1409:Eyebrow 1318:Canthus 1308:Eyelash 1220:Muscles 1164:of the 1021:1288875 495:of the 462:ethmoid 458:frontal 434:foramen 346:Anatomy 318:of the 266:maxilla 201:D008437 189:maxilla 160:Details 131:Maxilla 90:scholar 2078:Portal 1757:Plates 1736:Fossae 1522:fossae 1283:Tarsus 1270:Eyelid 1106:  1087:  1054:  1028:  1018:  950:  918:  852:(1918) 737:, and 666:, the 579:nasal, 484:, the 476:, and 432:, and 264:, the 170:First 92:  85:  78:  71:  63:  2031:Other 2015:Vomer 1941:Angle 1912:Ramus 1659:Other 1585:Nasal 1495:skull 1402:Other 1173:Bones 1162:orbit 842:from 753:beaks 749:Birds 700:falls 649:orbit 637:mouth 482:vomer 466:nasal 430:canal 378:Four 328:mouth 248:[ 184:Latin 97:JSTOR 83:books 2020:Wing 1974:Nose 1847:Chin 1836:Body 1489:The 1160:The 1104:ISBN 1085:ISBN 1052:ISBN 1026:PMID 948:ISBN 916:ISBN 670:and 658:and 620:The 525:Mall 444:the 438:the 424:the 403:the 397:the 391:the 385:the 367:The 316:bone 237:9711 208:TA98 196:MeSH 69:news 1851:Jaw 1780:, 1166:eye 1016:PMC 983:doi 883:OED 702:or 529:two 320:jaw 270:pl. 260:In 232:FMA 225:756 220:TA2 52:by 2104:: 1895:, 1891:, 1887:, 1873:, 1869:, 1865:, 1861:, 1857:, 1853:, 1849:, 1647:, 1643:, 1639:, 1635:, 1616:, 1587:: 1571:: 1555:: 1528:, 1520:: 1038:^ 1024:. 1012:45 1010:. 1004:. 977:. 971:. 930:^ 733:, 710:. 698:, 682:A 499:. 472:, 468:, 464:, 460:, 428:, 382:: 314:) 303:iː 272:: 2080:: 1899:) 1883:( 1877:) 1845:( 1784:) 1776:( 1770:) 1766:( 1719:) 1715:( 1709:) 1705:( 1699:) 1695:( 1651:) 1631:( 1620:) 1612:( 1532:) 1524:( 1482:e 1475:t 1468:v 1153:e 1146:t 1139:v 1112:. 1093:. 1060:. 1032:. 989:. 985:: 979:5 956:. 924:. 899:. 812:. 375:. 306:/ 300:l 297:ɪ 294:s 291:ˈ 288:k 285:æ 282:m 279:/ 268:( 252:] 119:) 113:( 108:) 104:( 94:· 87:· 80:· 73:· 46:. 23:.

Index

Maxilla (arthropod mouthpart)

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Precursor
branchial arch
Latin
MeSH
D008437
TA98
A02.1.12.001
TA2
756
FMA
9711
Anatomical terms of bone
edit on Wikidata
vertebrates
/mækˈsɪl/
Neopterygii

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