| The vascular relationship between the temporomandibular joint and the middle ear in the human fetus. | |
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MedLine Citation:
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PMID: 9973122 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: The aim of this work was to clarify the vascular relationships between the middle ear and the temporomandibular joint region during human fetal development. MATERIALS AND METHODS: Light microscopic studies were done on 40 human fetuses from 72 mm crown-rump length (C-R) to 150 mm C-R, which were stained by various methods. Five human fetuses were dissected. Natural latex with industrial coloring was injected through the external carotid artery. All specimens were dissected bilaterally. RESULTS: The limits of the retroarticular region and the fetal tympanosquamosal fissure are shown. The anterior tympanic artery has a variable origin. In most cases, it originates from the maxillary artery; in other cases it originates from the superficial temporal artery or the bifurcation of the external carotid artery. On its way through the retroarticular region, it gives branches to the posterior part of the temporomandibular joint. It progresses along the most lateral part of the tympanosquamosal fissure, dividing into three branches that extend throughout the middle ear. A number of venous spaces in the retroarticular region that constitute the retrodiscal venous plexus. Small venous vessels along the fetal tympanosquamosal fissure accompany the anterior tympanic artery and drain into the retrodiscal venous plexus. CONCLUSIONS: During human fetal development, there is a wide connection across the tympanosquamosal fissure between the middle ear and the temporomandibular joint region. The anterior tympanic artery and its branches, as well as small venous vessels that are connected with the retrodiscal venous plexus, extend along the most lateral part of the fissure. |
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Authors:
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J R Mérida-Velasco; J F Rodríguez-Vázquez; J A Mérida-Velasco; J Jiménez-Collado |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons Volume: 57 ISSN: 0278-2391 ISO Abbreviation: J. Oral Maxillofac. Surg. Publication Date: 1999 Feb |
Date Detail:
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Created Date: 1999-02-24 Completed Date: 1999-02-24 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8206428 Medline TA: J Oral Maxillofac Surg Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 146-53 Citation Subset: AIM; D; IM |
Affiliation:
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Department of Morphological Sciences II, University Complutense of Madrid, Spain. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Arteries
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embryology Carotid Artery, External / embryology Crown-Rump Length Ear Ossicles / blood supply, embryology Ear, Middle / blood supply, embryology* Embryonic and Fetal Development Gestational Age Humans Maxillary Artery / embryology Temporal Arteries / embryology Temporal Bone / blood supply, embryology Temporomandibular Joint / blood supply, embryology* Temporomandibular Joint Disk / blood supply, embryology Veins / embryology Venules / embryology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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