1312:
230:
197:, is the convex surface of the middle nasal concha; it extends along the whole length of the medial surface of the labyrinth, and its lower margin is free and thick. The lateral surface of the middle concha is concave, and assists in forming the middle meatus of the nose. The middle ethmoidal cells open into the central part of this
188:, which descends from the under surface of the cribriform plate, and ends below in a free, convoluted margin, the middle nasal concha. It is rough, and marked above by numerous grooves, directed nearly vertically downward from the cribriform plate; they lodge branches of the olfactory nerves, which are distributed to the
166:(os planum), which covers in the middle and posterior ethmoidal cells and forms a large part of the medial wall of the orbit; it articulates above with the orbital plate of the frontal bone, below with the maxilla and orbital process of the palatine, in front with the lacrimal, and behind with the sphenoid.
192:
covering the superior nasal concha. The back part of the surface is subdivided by a narrow oblique fissure, the superior meatus of the nose, bounded above by a thin, curved plate, the superior nasal concha; the posterior ethmoidal cells open into this meatus. Below, and in front of the
26:
1332:
205:, extends upward and forward through the labyrinth and communicates with the anterior ethmoidal cells, and in about 50% of skulls is continued upward as the frontonasal duct into the frontal sinus.
130:, arranged in three groups, anterior, middle, and posterior, and interposed between two vertical plates of bone; the lateral plate forms part of the orbit, the medial plate forms part of the
134:. In the disarticulated bone many of these cells are opened into, but when the bones are articulated, they are closed in at every part, except where they open into the nasal cavity.
169:
In front of the lamina papyracea are some broken air cells which are overlapped and completed by the lacrimal bone and the frontal process of the maxilla. A curved lamina, the
90:
142:
The upper surface of the labyrinth presents a number of half-broken cells, the walls of which are completed, in the articulated skull, by the edges of the
154:, and open on the inner wall of the orbit. The posterior surface presents large irregular cellular cavities, which are closed in by articulation with the
155:
66:
146:
of the frontal bone. Crossing this surface are two grooves, converted into two openings by articulation with the frontal; they are the
275:
184:
The medial surface of the labyrinth forms part of the lateral wall of the corresponding nasal cavity. It consists of a thin
1337:
1198:
1082:
881:
720:
801:
783:
730:
614:
1222:
170:
159:
173:, projects downward and backward from this part of the labyrinth; it forms a small part of the medial wall of the
398:
376:
322:
1217:
450:
999:
845:
85:
1342:
1054:
641:
607:
1278:
1022:
941:
386:
151:
239:
1302:
1283:
268:
147:
1067:
1062:
857:
808:
772:
654:
381:
332:
97:
1114:
1044:
1119:
1034:
958:
73:
61:
1235:
1147:
1017:
715:
261:
1260:
1230:
862:
818:
705:
597:
8:
1245:
1039:
850:
580:
458:
1311:
1191:
1152:
981:
700:
371:
305:
1131:
953:
936:
931:
889:
813:
692:
523:
513:
423:
406:
243:
185:
1333:
Knowledge articles incorporating text from the 20th edition of Gray's
Anatomy (1918)
1181:
1027:
1012:
989:
968:
963:
828:
758:
710:
669:
570:
557:
463:
438:
342:
163:
1240:
1126:
1097:
948:
743:
738:
659:
649:
624:
528:
433:
411:
354:
194:
189:
174:
143:
1316:
1102:
976:
768:
763:
565:
538:
479:
416:
296:
1326:
1268:
1250:
926:
921:
903:
833:
791:
753:
747:
683:
664:
629:
533:
518:
505:
327:
235:
198:
127:
253:
78:
1186:
1166:
796:
548:
359:
337:
284:
202:
178:
131:
123:
30:
1072:
288:
103:
602:
489:
162:. The lateral surface is formed of a thin, smooth, oblong plate, the
869:
585:
234:
One or more of the preceding sentences incorporates text in the
484:
318:
177:, and articulates with the ethmoidal process of the inferior
49:
126:
consists of a number of thin-walled cellular cavities, the
25:
1300:
1324:
872:in petrous part, but not part of temporal bone)
283:
269:
224:
222:
220:
218:
276:
262:
24:
215:
1325:
257:
201:, and a sinuous passage, termed the
13:
14:
1354:
1310:
228:
160:orbital process of palatine bone
377:Internal occipital protuberance
323:External occipital protuberance
1:
242:of the 20th edition of
208:
152:posterior ethmoidal foramina
7:
942:Posterior clinoid processes
387:Groove for transverse sinus
137:
10:
1359:
1338:Bones of the head and neck
1259:
1207:
1174:
1165:
1140:
1081:
1053:
998:
911:
902:
880:
782:
729:
691:
682:
640:
556:
547:
504:
472:
449:
397:
304:
295:
96:
84:
72:
60:
48:
43:
38:
23:
18:
1068:Anterior clinoid process
1063:Superior orbital fissure
809:Internal auditory meatus
655:Fossa for lacrimal gland
382:Internal occipital crest
333:External occipital crest
98:Anatomical terms of bone
1045:Sulcus of auditory tube
55:labyrinthus ethmoidalis
959:Middle clinoid process
1236:Superior nasal concha
716:Petrotympanic fissure
1231:Supreme nasal concha
863:Petrosquamous suture
819:Stylomastoid foramen
706:Suprameatal triangle
598:Supraorbital foramen
1343:Otorhinolaryngology
1246:Middle nasal concha
1199:Perpendicular plate
1040:Infratemporal crest
581:Superciliary arches
459:Pharyngeal tubercle
116:ethmoidal labyrinth
19:Ethmoidal labyrinth
1274:ethmoidal foramina
1192:Olfactory foramina
1153:Sphenoidal conchae
990:Sphenoidal sinuses
982:Sphenoidal lingula
701:Articular tubercle
372:Cruciform eminence
1298:
1297:
1294:
1293:
1161:
1160:
987:Anterior surface:
954:Chiasmatic groove
937:Hypophysial fossa
932:Tuberculum sellae
919:Superior surface:
898:
897:
890:Suprameatal spine
846:Inferior tympanic
814:Cochlear aqueduct
721:Zygomatic process
678:
677:
615:Zygomatic process
514:Parietal eminence
500:
499:
424:Hypoglossal canal
156:sphenoidal concha
128:ethmoid air cells
112:
111:
107:
1350:
1315:
1314:
1306:
1223:Uncinate process
1182:Cribriform plate
1172:
1171:
1110:pterygoid plates
974:Lateral surface:
964:Petrosal process
909:
908:
829:Subarcuate fossa
759:Occipital groove
711:Mandibular fossa
689:
688:
670:Frontonasal duct
571:Frontal eminence
554:
553:
524:Parietal foramen
439:Jugular tubercle
343:Suprainiac fossa
302:
301:
278:
271:
264:
255:
254:
248:
232:
231:
226:
171:uncinate process
164:lamina papyracea
104:edit on Wikidata
101:
28:
16:
15:
1358:
1357:
1353:
1352:
1351:
1349:
1348:
1347:
1323:
1322:
1321:
1309:
1301:
1299:
1290:
1255:
1241:Superior meatus
1215:Lateral surface
1203:
1157:
1136:
1127:Pterygoid canal
1084:
1077:
1049:
994:
949:Ethmoidal spine
894:
876:
858:Styloid process
778:
744:Mastoid process
739:Mastoid foramen
725:
674:
660:Trochlear fovea
650:Ethmoidal notch
636:
625:Sagittal sulcus
543:
529:Sagittal sulcus
496:
468:
445:
434:Jugular process
412:Condyloid fossa
393:
291:
282:
252:
251:
229:
227:
216:
211:
195:superior meatus
190:mucous membrane
175:maxillary sinus
144:ethmoidal notch
140:
108:
34:
12:
11:
5:
1356:
1346:
1345:
1340:
1335:
1320:
1319:
1296:
1295:
1292:
1291:
1289:
1288:
1287:
1286:
1281:
1271:
1265:
1263:
1257:
1256:
1254:
1253:
1248:
1243:
1238:
1233:
1228:Medial surface
1225:
1220:
1218:Orbital lamina
1211:
1209:
1205:
1204:
1202:
1201:
1196:
1195:
1194:
1189:
1178:
1176:
1169:
1163:
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1159:
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1155:
1150:
1144:
1142:
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1137:
1135:
1134:
1129:
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1123:
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1117:
1107:
1106:
1105:
1100:
1089:
1087:
1079:
1078:
1076:
1075:
1070:
1065:
1059:
1057:
1051:
1050:
1048:
1047:
1042:
1037:
1032:
1031:
1030:
1025:
1020:
1015:
1004:
1002:
996:
995:
993:
992:
984:
979:
977:Carotid groove
971:
966:
961:
956:
951:
946:
945:
944:
939:
934:
929:
915:
913:
906:
900:
899:
896:
895:
893:
892:
886:
884:
878:
877:
875:
874:
865:
860:
855:
854:
853:
848:
838:
837:
836:
831:
821:
816:
811:
806:
805:
804:
794:
788:
786:
780:
779:
777:
776:
769:Mastoid antrum
766:
764:Sigmoid sulcus
761:
756:
751:
741:
735:
733:
727:
726:
724:
723:
718:
713:
708:
703:
697:
695:
686:
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679:
676:
675:
673:
672:
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657:
652:
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644:
638:
637:
635:
634:
633:
632:
627:
617:
612:
611:
610:
605:
600:
590:
589:
588:
583:
573:
568:
566:Frontal suture
562:
560:
551:
545:
544:
542:
541:
539:Sagittal crest
536:
531:
526:
521:
516:
510:
508:
502:
501:
498:
497:
495:
494:
493:
492:
487:
480:Foramen magnum
476:
474:
470:
469:
467:
466:
461:
455:
453:
447:
446:
444:
443:
442:
441:
436:
426:
421:
420:
419:
417:Condylar canal
414:
403:
401:
395:
394:
392:
391:
390:
389:
384:
379:
374:
364:
363:
362:
357:
347:
346:
345:
340:
335:
330:
325:
310:
308:
299:
293:
292:
281:
280:
273:
266:
258:
250:
249:
244:Gray's Anatomy
213:
212:
210:
207:
139:
136:
110:
109:
100:
94:
93:
88:
82:
81:
76:
70:
69:
64:
58:
57:
52:
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36:
35:
29:
21:
20:
9:
6:
4:
3:
2:
1355:
1344:
1341:
1339:
1336:
1334:
1331:
1330:
1328:
1318:
1313:
1308:
1307:
1304:
1285:
1282:
1280:
1277:
1276:
1275:
1272:
1270:
1269:Ethmoid sinus
1267:
1266:
1264:
1262:
1258:
1252:
1251:Middle meatus
1249:
1247:
1244:
1242:
1239:
1237:
1234:
1232:
1229:
1226:
1224:
1221:
1219:
1216:
1213:
1212:
1210:
1206:
1200:
1197:
1193:
1190:
1188:
1185:
1184:
1183:
1180:
1179:
1177:
1173:
1170:
1168:
1164:
1154:
1151:
1149:
1146:
1145:
1143:
1139:
1133:
1130:
1128:
1125:
1121:
1118:
1116:
1113:
1112:
1111:
1108:
1104:
1101:
1099:
1096:
1095:
1094:
1091:
1090:
1088:
1086:
1080:
1074:
1071:
1069:
1066:
1064:
1061:
1060:
1058:
1056:
1052:
1046:
1043:
1041:
1038:
1036:
1033:
1029:
1026:
1024:
1021:
1019:
1016:
1014:
1011:
1010:
1009:
1006:
1005:
1003:
1001:
997:
991:
988:
985:
983:
980:
978:
975:
972:
970:
967:
965:
962:
960:
957:
955:
952:
950:
947:
943:
940:
938:
935:
933:
930:
928:
927:Dorsum sellae
925:
924:
923:
922:Sella turcica
920:
917:
916:
914:
910:
907:
905:
901:
891:
888:
887:
885:
883:
882:Tympanic part
879:
873:
871:
866:
864:
861:
859:
856:
852:
849:
847:
844:
843:
842:
839:
835:
834:Jugular fossa
832:
830:
827:
826:
825:
822:
820:
817:
815:
812:
810:
807:
803:
800:
799:
798:
795:
793:
792:Carotid canal
790:
789:
787:
785:
781:
774:
770:
767:
765:
762:
760:
757:
755:
754:Mastoid notch
752:
749:
748:Mastoid cells
745:
742:
740:
737:
736:
734:
732:
728:
722:
719:
717:
714:
712:
709:
707:
704:
702:
699:
698:
696:
694:
693:Squamous part
690:
687:
685:
681:
671:
668:
666:
665:Frontal sinus
663:
661:
658:
656:
653:
651:
648:
647:
645:
643:
639:
631:
630:Frontal crest
628:
626:
623:
622:
621:
618:
616:
613:
609:
608:Foramen cecum
606:
604:
601:
599:
596:
595:
594:
591:
587:
584:
582:
579:
578:
577:
574:
572:
569:
567:
564:
563:
561:
559:
558:Squamous part
555:
552:
550:
546:
540:
537:
535:
534:Sagittal keel
532:
530:
527:
525:
522:
520:
519:Temporal line
517:
515:
512:
511:
509:
507:
503:
491:
488:
486:
483:
482:
481:
478:
477:
475:
471:
465:
462:
460:
457:
456:
454:
452:
448:
440:
437:
435:
432:
431:
430:
427:
425:
422:
418:
415:
413:
410:
409:
408:
405:
404:
402:
400:
399:Lateral parts
396:
388:
385:
383:
380:
378:
375:
373:
370:
369:
368:
365:
361:
358:
356:
353:
352:
351:
348:
344:
341:
339:
336:
334:
331:
329:
328:Occipital bun
326:
324:
320:
317:
316:
315:
312:
311:
309:
307:
306:Squamous part
303:
300:
298:
294:
290:
286:
279:
274:
272:
267:
265:
260:
259:
256:
247:
245:
241:
237:
236:public domain
225:
223:
221:
219:
214:
206:
204:
200:
196:
191:
187:
182:
180:
176:
172:
167:
165:
161:
157:
153:
149:
145:
135:
133:
129:
125:
121:
117:
105:
99:
95:
92:
89:
87:
83:
80:
77:
75:
71:
68:
65:
63:
59:
56:
53:
51:
47:
42:
37:
32:
27:
22:
17:
1273:
1227:
1214:
1187:Crista galli
1109:
1092:
1007:
986:
973:
918:
867:
840:
823:
797:Facial canal
784:Petrous part
731:Mastoid part
642:Orbital part
619:
592:
575:
451:Basilar part
428:
366:
349:
338:Nuchal lines
313:
285:Neurocranium
233:
203:infundibulum
183:
179:nasal concha
168:
141:
132:nasal cavity
124:ethmoid bone
120:lateral mass
119:
115:
113:
67:A02.1.07.007
54:
33:from behind.
31:Ethmoid bone
1073:Optic canal
1055:Small wings
1000:Great wings
44:Identifiers
1327:Categories
841:canaliculi
603:Brow ridge
209:References
1279:Posterior
1261:Labyrinth
1098:Pterygoid
1085:processes
1083:Pterygoid
490:Opisthion
355:Occipital
297:Occipital
1284:Anterior
1208:Surfaces
1103:Scaphoid
1028:Spinosum
1013:Rotundum
1008:foramina
912:Surfaces
904:Sphenoid
870:ossicles
684:Temporal
620:internal
593:foramina
586:Glabella
576:external
506:Parietal
367:internal
314:external
240:page 154
148:anterior
138:Surfaces
1317:Anatomy
1167:Ethmoid
1132:Hamulus
1115:Lateral
1023:Vesalii
868:(note:
851:Mastoid
549:Frontal
429:jugular
407:Condyle
287:of the
186:lamella
122:of the
39:Details
1303:Portal
1175:Plates
1120:Medial
1093:fossae
969:Clivus
824:fossae
802:Hiatus
773:Aditus
485:Basion
464:Clivus
360:Nuchal
350:planes
246:(1918)
199:meatus
1141:Other
1035:Spine
1018:Ovale
473:Other
319:Inion
289:skull
238:from
102:[
91:57448
50:Latin
1148:Body
158:and
150:and
114:The
62:TA98
118:or
86:FMA
79:727
74:TA2
1329::
217:^
181:.
1305::
775:)
771:(
750:)
746:(
321:/
277:e
270:t
263:v
106:]
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