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Posterior cricoarytenoid muscle

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Different parts of the muscle (such as the medial and lateral muscle bellies) are often innervated by separate branches. There may be 1-6 branches, but are usually 2-3. These may connect within the muscle. This innervation modality may indicate that the different parts of the muscle can be activated
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The muscle is directed superiorly and laterally from its origin to its insertion. The muscle's fibres vary in orientation superoinferiorly: the superior-most fibres are nearly horizontally oriented, the intermediate fibres are obliquely oriented, and the inferior-most fibres are nearly vertically
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study, the muscle exhibits two distinct bellies - a medial belly and a lateral belly - which differ in the orientation of their muscle fibres and the site of insertion at the muscular process.
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oriented; the distinct orientations of muscle fibres may indicate that the muscle could produce different movements depending upon which portion of the muscle contracts.
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The muscle additionally draws the arytenoid cartilages posterior-ward, thus (assisting in) lengthening the vocal cords (here acting as synergist of the
857: 708: 547: 320:). The lateral-most portion of the muscle also draws the arytenoid cartilages lateral-ward, making the rima glottidis into a triangular shape. 145: 213:. Each acts to open the vocal folds by pulling the vocal fold of the same side laterally. It participates in the production of sounds. 978: 1341: 626:
Bryant, Nancy Jones; Woodson, Gayle E.; Kaufman, Kenton; Rosen, Clark; Hengesteg, Arne; Chen, Naidy; Yeung, Daniel (1996-12-01).
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The muscle's fibres converge to insert onto (the superior, posterior and (minimally the) anterolateral aspects of) the
570:"The innervation of the human posterior cricoarytenoid muscle: Evidence for at least two neuromuscular compartments" 1099: 1094: 938: 1054: 383: 1049: 1245: 971: 789: 310: 257:(its medial belly and lateral belly insert onto the muscular process medially and laterally, respectively). 164: 116: 726: 569: 407: 1012: 784: 176: 87: 1212: 479: 455: 443: 395: 266: 210: 75: 431: 964: 725:
Maranillo, Eva; León, Xavier; Ibañez, Marta; Orús, César; Quer, Miguel; Sañudo, José Ramón (2003).
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The posterior cricoarytenoid muscle receives motor innervation from (the anterior division of) the
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The Arytenoid Cartilages - a clinical overview. 2002, Dr. C Kay et al. Thorne Publishing (C)
1358: 1326: 1263: 1162: 1064: 8: 1336: 1230: 1022: 882:"Effects of Denervation on Posterior Cricoarytenoid Muscle Physiology and Histochemistry" 643: 317: 254: 206: 111: 63: 1331: 1177: 1157: 1144: 1111: 917: 851: 762: 727:"Variability of the Nerve Supply Patterns of the Human Posterior Cricoarytenoid Muscle" 702: 627: 605: 541: 198: 1308: 1257: 1222: 1152: 1134: 1124: 1042: 909: 901: 837: 814: 806: 754: 746: 742: 690: 680: 655: 647: 597: 589: 585: 529: 519: 238: 202: 96: 28: 949: 921: 766: 609: 1373: 1271: 1252: 1129: 1119: 1032: 893: 798: 785:"Respiratory activity of posterior cricoarytenoid muscle and vocal cords in humans" 738: 639: 581: 1167: 1027: 1007: 802: 1348: 1037: 897: 333: 104: 100: 694: 533: 1388: 905: 881: 810: 750: 651: 593: 302: 301:
The muscle rotates the arytenoid cartilages laterally, thereby abducting the
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Zealear, David L.; Hamdan, Abdul-Latif; Ratney, Cheryl L. (1994-10-01).
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Muscles of larynx. Side view. Right lamina of thyroid cartilage removed.
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that are attached to them. In this, the muscle is an antagonist of the
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The muscle receives arterial supply from the laryngeal branches of the
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The posterior cricoarytenoid muscles are the only muscles to open the
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The muscle originates from (the posterior aspect of) the lamina of
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Brancatisano, T. P.; Dodd, D. S.; Engel, L. A. (1 October 1984).
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Sanders, Ira; Wu, Bei-Lian; Mu, Liancai; Biller, Hugh P. (1994).
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at The Anatomy Lesson by Wesley Norman (Georgetown University) (
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at different times so that it can produce different movements.
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Paralysis of the posterior cricoarytenoid muscles may lead to
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Gray's Anatomy: The Anatomical Basis of Clinical Practice
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Gray's Anatomy: The Anatomical Basis of Clinical Practice
724: 782: 356:, as they are the only laryngeal muscles to open the 332:. By abducting the vocal folds, the muscle opens the 201:) intrinsic muscle of the larynx. It arises from the 425:
Dissection of the muscles of the palate from behind.
879: 632:Archives of Otolaryngology–Head & Neck Surgery 567: 103:away from the midline and forward and so opening 1386: 886:Annals of Otology, Rhinology & Laryngology 972: 389:The cartilages of the larynx. Posterior view. 62:Posterior surface of muscular process of the 941:at the University of Michigan Health System 979: 965: 856:: CS1 maint: location missing publisher ( 707:: CS1 maint: location missing publisher ( 546:: CS1 maint: location missing publisher ( 209:of the same side. It is innervated by the 27: 825: 672: 511: 679:(42th ed.). New York. p. 727. 518:(42nd ed.). New York. p. 727. 347: 986: 507: 505: 503: 501: 499: 497: 495: 413:Muscles of the larynx, seen from above. 1387: 831: 960: 134:musculus cricoarytaenoideus posterior 778: 776: 720: 718: 644:10.1001/archotol.1996.01890240039009 621: 619: 563: 561: 559: 557: 492: 375: 296: 666: 13: 401:Muscles of larynx. Posterior view. 14: 1406: 932: 773: 715: 616: 554: 834:Recurrent laryngeal nerve injury 743:10.1097/00005537-200304000-00004 586:10.1288/00005537-199407000-00019 454: 442: 430: 418: 406: 394: 382: 1055:Rectus capitis lateralis muscle 461:Posterior cricoarytenoid muscle 449:Posterior cricoarytenoid muscle 437:Posterior cricoarytenoid muscle 372:that worsens over many months. 195:posterior cricoarytenoid muscle 1050:Rectus capitis anterior muscle 873: 864: 280: 260: 1: 790:Journal of Applied Physiology 485: 311:lateral cricoarytenoid muscle 117:Lateral cricoarytenoid muscle 99:arytenoid cartilage, pulling 1395:Muscles of the head and neck 803:10.1152/jappl.1984.57.4.1143 244: 216: 7: 466: 323: 10: 1411: 898:10.1177/000348949410301007 470: 177:Anatomical terms of muscle 1317: 1299: 1221: 1176: 1143: 1110: 1063: 998: 673:Standring, Susan (2020). 512:Standring, Susan (2020). 480:Recurrent laryngeal nerve 267:recurrent laryngeal nerve 232: 211:recurrent laryngeal nerve 175: 163: 151: 139: 127: 122: 110: 86: 76:Recurrent laryngeal nerve 69: 56: 43: 38: 26: 21: 1073:Rectus capitis posterior 269:(itself a branch of the 22:Posterior cricoarytenoid 336:. This is important in 291:inferior thyroid artery 287:superior thyroid artery 1369:Pharyngobasilar fascia 1364:Buccopharyngeal fascia 1186:Pharyngeal constrictor 832:Hydman, Jonas (2008). 473:anatomical terminology 205:; it inserts onto the 49:Posterior part of the 348:Clinical significance 1359:Palatine aponeurosis 1327:Deep cervical fascia 1272:transverse arytenoid 16:Muscle of the larynx 1337:Prevertebral fascia 1013:Sternocleidomastoid 939:Atlas image: rsa4p2 318:cricothyroid muscle 255:arytenoid cartilage 253:of the ipsilateral 207:arytenoid cartilage 64:arytenoid cartilage 1332:Pretracheal fascia 1213:Salpingopharyngeus 471:This article uses 271:vagus nerve (CN X) 199:bilaterally paired 1382: 1381: 1258:oblique arytenoid 843:978-91-7409-123-6 686:978-0-7020-7707-4 638:(12): 1331–1336. 525:978-0-7020-7707-4 376:Additional images 297:Actions/movements 239:cricoid cartilage 203:cricoid cartilage 191: 190: 186: 97:laterally rotates 1402: 1374:Pharyngeal raphe 1090:Obliquus capitis 981: 974: 967: 958: 957: 926: 925: 877: 871: 868: 862: 861: 855: 847: 829: 823: 822: 797:(4): 1143–1149. 780: 771: 770: 731:The Laryngoscope 722: 713: 712: 706: 698: 670: 664: 663: 623: 614: 613: 574:The Laryngoscope 565: 552: 551: 545: 537: 509: 458: 446: 434: 422: 410: 398: 386: 368:leads to a slow 251:muscular process 183:edit on Wikidata 180: 31: 19: 18: 1410: 1409: 1405: 1404: 1403: 1401: 1400: 1399: 1385: 1384: 1383: 1378: 1342:Investing layer 1313: 1295: 1289:thyroepiglottic 1217: 1208:Stylopharyngeus 1172: 1139: 1106: 1059: 994: 985: 935: 930: 929: 892:(10): 780–788. 878: 874: 869: 865: 849: 848: 844: 830: 826: 781: 774: 723: 716: 700: 699: 687: 671: 667: 624: 617: 566: 555: 539: 538: 526: 510: 493: 488: 476: 469: 462: 459: 450: 447: 438: 435: 426: 423: 414: 411: 402: 399: 390: 387: 378: 350: 326: 303:vocal processes 299: 283: 263: 247: 235: 225:According to a 219: 187: 101:vocal ligaments 34: 17: 12: 11: 5: 1408: 1398: 1397: 1380: 1379: 1377: 1376: 1371: 1366: 1361: 1356: 1351: 1349:Carotid sheath 1346: 1345: 1344: 1339: 1334: 1323: 1321: 1315: 1314: 1312: 1311: 1305: 1303: 1297: 1296: 1294: 1293: 1292: 1291: 1286: 1279:Thyroarytenoid 1276: 1275: 1274: 1269: 1268: 1267: 1250: 1249: 1248: 1243: 1236:Cricoarytenoid 1233: 1227: 1225: 1219: 1218: 1216: 1215: 1210: 1205: 1204: 1203: 1198: 1193: 1182: 1180: 1174: 1173: 1171: 1170: 1165: 1160: 1155: 1149: 1147: 1141: 1140: 1138: 1137: 1132: 1127: 1122: 1116: 1114: 1108: 1107: 1105: 1104: 1103: 1102: 1097: 1087: 1086: 1085: 1080: 1069: 1067: 1061: 1060: 1058: 1057: 1052: 1047: 1046: 1045: 1040: 1035: 1025: 1020: 1018:Longus capitis 1015: 1010: 1004: 1002: 996: 995: 984: 983: 976: 969: 961: 955: 954: 942: 934: 933:External links 931: 928: 927: 872: 863: 842: 824: 772: 737:(4): 602–606. 714: 685: 665: 615: 580:(7): 880–884. 553: 524: 490: 489: 487: 484: 483: 482: 468: 465: 464: 463: 460: 453: 451: 448: 441: 439: 436: 429: 427: 424: 417: 415: 412: 405: 403: 400: 393: 391: 388: 381: 377: 374: 349: 346: 334:rima glottidis 325: 322: 298: 295: 282: 279: 262: 259: 246: 243: 234: 231: 218: 215: 189: 188: 179: 173: 172: 167: 161: 160: 155: 149: 148: 143: 137: 136: 131: 125: 124: 120: 119: 114: 108: 107: 105:rima glottidis 90: 84: 83: 78:branch of the 73: 67: 66: 60: 54: 53: 47: 41: 40: 36: 35: 32: 24: 23: 15: 9: 6: 4: 3: 2: 1407: 1396: 1393: 1392: 1390: 1375: 1372: 1370: 1367: 1365: 1362: 1360: 1357: 1355: 1352: 1350: 1347: 1343: 1340: 1338: 1335: 1333: 1330: 1329: 1328: 1325: 1324: 1322: 1320: 1316: 1310: 1307: 1306: 1304: 1302: 1298: 1290: 1287: 1285: 1282: 1281: 1280: 1277: 1273: 1270: 1266: 1265: 1264:aryepiglottic 1261: 1260: 1259: 1256: 1255: 1254: 1251: 1247: 1244: 1242: 1239: 1238: 1237: 1234: 1232: 1229: 1228: 1226: 1224: 1220: 1214: 1211: 1209: 1206: 1202: 1199: 1197: 1194: 1192: 1189: 1188: 1187: 1184: 1183: 1181: 1179: 1175: 1169: 1166: 1164: 1163:Sternothyroid 1161: 1159: 1156: 1154: 1151: 1150: 1148: 1146: 1142: 1136: 1133: 1131: 1128: 1126: 1123: 1121: 1118: 1117: 1115: 1113: 1109: 1101: 1098: 1096: 1093: 1092: 1091: 1088: 1084: 1081: 1079: 1076: 1075: 1074: 1071: 1070: 1068: 1066: 1062: 1056: 1053: 1051: 1048: 1044: 1041: 1039: 1036: 1034: 1031: 1030: 1029: 1026: 1024: 1021: 1019: 1016: 1014: 1011: 1009: 1006: 1005: 1003: 1001: 997: 993: 989: 982: 977: 975: 970: 968: 963: 962: 959: 952: 951: 950:larynxmuscles 946: 943: 940: 937: 936: 923: 919: 915: 911: 907: 903: 899: 895: 891: 887: 883: 876: 867: 859: 853: 845: 839: 836:. Stockholm. 835: 828: 820: 816: 812: 808: 804: 800: 796: 792: 791: 786: 779: 777: 768: 764: 760: 756: 752: 748: 744: 740: 736: 732: 728: 721: 719: 710: 704: 696: 692: 688: 682: 678: 677: 669: 661: 657: 653: 649: 645: 641: 637: 633: 629: 622: 620: 611: 607: 603: 599: 595: 591: 587: 583: 579: 575: 571: 564: 562: 560: 558: 549: 543: 535: 531: 527: 521: 517: 516: 508: 506: 504: 502: 500: 498: 496: 491: 481: 478: 477: 474: 457: 452: 445: 440: 433: 428: 421: 416: 409: 404: 397: 392: 385: 380: 379: 373: 371: 367: 363: 359: 355: 345: 343: 339: 335: 331: 321: 319: 314: 312: 308: 304: 294: 292: 288: 278: 274: 272: 268: 258: 256: 252: 242: 240: 230: 228: 223: 214: 212: 208: 204: 200: 196: 184: 178: 174: 171: 168: 166: 162: 159: 156: 154: 150: 147: 144: 142: 138: 135: 132: 130: 126: 121: 118: 115: 113: 109: 106: 102: 98: 94: 91: 89: 85: 81: 77: 74: 72: 68: 65: 61: 59: 55: 52: 48: 46: 42: 37: 30: 25: 20: 1262: 1240: 1231:Cricothyroid 1089: 1072: 1065:Suboccipital 1023:Longus colli 948: 889: 885: 875: 866: 833: 827: 794: 788: 734: 730: 675: 668: 635: 631: 577: 573: 514: 351: 327: 315: 300: 284: 275: 264: 248: 236: 224: 220: 194: 192: 146:A06.2.08.004 133: 1354:Alar fascia 1158:Sternohyoid 366:Denervation 358:vocal cords 330:vocal cords 307:vocal folds 281:Vasculature 261:Innervation 123:Identifiers 80:vagus nerve 1309:Trachealis 1153:Thyrohyoid 1145:Infrahyoid 1135:Geniohyoid 1125:Stylohyoid 1112:Suprahyoid 695:1201341621 534:1201341621 486:References 360:(allowing 112:Antagonist 1253:Arytenoid 1241:posterior 1130:Digastric 1120:Mylohyoid 1043:posterior 906:0003-4894 852:cite book 811:8750-7587 751:1531-4995 703:cite book 652:0886-4470 594:1531-4995 542:cite book 362:breathing 338:breathing 245:Insertion 227:cadaveric 217:Structure 58:Insertion 1389:Category 1201:inferior 1191:superior 1168:Omohyoid 1100:superior 1095:inferior 1033:anterior 1008:Platysma 1000:Cervical 945:lesson11 922:22946351 767:23686151 759:12671414 610:45469959 467:See also 370:fibrosis 354:asphyxia 324:Function 305:and the 1319:Fasciae 1301:Trachea 1246:lateral 1178:Pharynx 1028:Scalene 990:of the 988:Muscles 914:7944169 819:6501030 660:8956745 602:8022253 93:Abducts 88:Actions 51:cricoid 39:Details 1223:Larynx 1196:middle 1038:middle 920:  912:  904:  840:  817:  809:  765:  757:  749:  693:  683:  658:  650:  608:  600:  592:  532:  522:  342:speech 233:Origin 197:is a ( 82:(CN X) 45:Origin 1284:vocal 1083:minor 1078:major 918:S2CID 763:S2CID 606:S2CID 181:[ 170:46576 129:Latin 71:Nerve 992:neck 910:PMID 902:ISSN 858:link 838:ISBN 815:PMID 807:ISSN 755:PMID 747:ISSN 709:link 691:OCLC 681:ISBN 656:PMID 648:ISSN 598:PMID 590:ISSN 548:link 530:OCLC 520:ISBN 340:and 289:and 193:The 158:2196 141:TA98 95:and 894:doi 890:103 799:doi 739:doi 735:113 640:doi 636:122 582:doi 578:104 364:). 273:). 165:FMA 153:TA2 1391:: 916:. 908:. 900:. 888:. 884:. 854:}} 850:{{ 813:. 805:. 795:57 793:. 787:. 775:^ 761:. 753:. 745:. 733:. 729:. 717:^ 705:}} 701:{{ 689:. 654:. 646:. 634:. 630:. 618:^ 604:. 596:. 588:. 576:. 572:. 556:^ 544:}} 540:{{ 528:. 494:^ 313:. 293:. 241:. 980:e 973:t 966:v 953:) 924:. 896:: 860:) 846:. 821:. 801:: 769:. 741:: 711:) 697:. 662:. 642:: 612:. 584:: 550:) 536:. 475:. 185:]

Index


Origin
cricoid
Insertion
arytenoid cartilage
Nerve
Recurrent laryngeal nerve
vagus nerve
Actions
Abducts
laterally rotates
vocal ligaments
rima glottidis
Antagonist
Lateral cricoarytenoid muscle
Latin
TA98
A06.2.08.004
TA2
2196
FMA
46576
Anatomical terms of muscle
edit on Wikidata
bilaterally paired
cricoid cartilage
arytenoid cartilage
recurrent laryngeal nerve
cadaveric
cricoid cartilage

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