Human spinal arachnoid septa, trabeculae, and "rogue strands".
Identifieur interne : 004674 ( Main/Exploration ); précédent : 004673; suivant : 004675Human spinal arachnoid septa, trabeculae, and "rogue strands".
Auteurs : D. Parkinson [Canada]Source :
- The American journal of anatomy [ 0002-9106 ] ; 1991.
English descriptors
- KwdEn :
- MESH :
- anatomy & histology : Arachnoid, Spinal Cord.
- blood supply : Arachnoid.
- embryology : Arachnoid.
- Adolescent, Adult, Age Factors, Child, Child, Preschool, Humans, Infant, Infant, Newborn, Middle Aged, Sex Factors.
Abstract
This study was undertaken because of confusion arising from a diversity of names, descriptions, and drawings of the human spinal subarachnoid septa and trabeculae in the standard texts and dictionaries. Sixty-two complete human cords were examined under the dissecting scope. The finely "woven" adult arachnoid membrane was two-layered, and there were essentially no connecting septa or trabeculae between the cord and the arachnoid membrane anteriorly. Posteriorly, in the upper cervical region there is a scanty series of connecting fibers and fenestrated sheets 1 or 2 mm on either side of the midline; these become progressively more extensive in the lower cervical region, remain extensive to the lumbar enlargement, beyond which they progressively dwindle to end abruptly at the filum terminale origin. Throughout the cauda equina, strands are haphazardly arranged connecting the roots and supporting blood vessels. These occasionally become tangentially adherent to the arachnoid membrane. Throughout the length there are many unexplained, redundant, nonbranching, beaded, thicker "rogue strands". All of the above are of a different character from the right-angle fiber arrangement of the denticulate ligament, the two leaves of which are often separated form segmental longitudinal tunnels. The nerve rootlets (fila radicularia) for each dermatome are joined by strands and webs to each other. There was no evidence of change in number or type of connection with age.
DOI: 10.1002/aja.1001920414
PubMed: 1781456
Affiliations:
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Le document en format XML
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Parkinson</name><affiliation wicri:level="4"><nlm:affiliation>Department of Anatomy, Faculty of Medicine, University of Manitoba, Winnipeg, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Anatomy, Faculty of Medicine, University of Manitoba, Winnipeg</wicri:regionArea><orgName type="university">Université du Manitoba</orgName><placeName><settlement type="city">Winnipeg</settlement><region type="state">Manitoba</region></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="1991">1991</date><idno type="RBID">pubmed:1781456</idno><idno type="pmid">1781456</idno><idno type="doi">10.1002/aja.1001920414</idno><idno type="wicri:Area/PubMed/Corpus">001B02</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">001B02</idno><idno type="wicri:Area/PubMed/Curation">001B02</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">001B02</idno><idno type="wicri:Area/PubMed/Checkpoint">001B02</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">001B02</idno><idno type="wicri:Area/Ncbi/Merge">000812</idno><idno type="wicri:Area/Ncbi/Curation">000812</idno><idno type="wicri:Area/Ncbi/Checkpoint">000812</idno><idno type="wicri:doubleKey">0002-9106:1991:Parkinson D:human:spinal:arachnoid</idno><idno type="wicri:Area/Main/Merge">004F42</idno><idno type="wicri:Area/Main/Curation">004674</idno><idno type="wicri:Area/Main/Exploration">004674</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Human spinal arachnoid septa, trabeculae, and "rogue strands".</title><author><name sortKey="Parkinson, D" sort="Parkinson, D" uniqKey="Parkinson D" first="D" last="Parkinson">D. Parkinson</name><affiliation wicri:level="4"><nlm:affiliation>Department of Anatomy, Faculty of Medicine, University of Manitoba, Winnipeg, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Anatomy, Faculty of Medicine, University of Manitoba, Winnipeg</wicri:regionArea><orgName type="university">Université du Manitoba</orgName><placeName><settlement type="city">Winnipeg</settlement><region type="state">Manitoba</region></placeName></affiliation></author></analytic><series><title level="j">The American journal of anatomy</title><idno type="ISSN">0002-9106</idno><imprint><date when="1991" type="published">1991</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adolescent</term><term>Adult</term><term>Age Factors</term><term>Arachnoid (anatomy & histology)</term><term>Arachnoid (blood supply)</term><term>Arachnoid (embryology)</term><term>Child</term><term>Child, Preschool</term><term>Humans</term><term>Infant</term><term>Infant, Newborn</term><term>Middle Aged</term><term>Sex Factors</term><term>Spinal Cord (anatomy & histology)</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Arachnoid</term><term>Spinal Cord</term></keywords><keywords scheme="MESH" qualifier="blood supply" xml:lang="en"><term>Arachnoid</term></keywords><keywords scheme="MESH" qualifier="embryology" xml:lang="en"><term>Arachnoid</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adolescent</term><term>Adult</term><term>Age Factors</term><term>Child</term><term>Child, Preschool</term><term>Humans</term><term>Infant</term><term>Infant, Newborn</term><term>Middle Aged</term><term>Sex Factors</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This study was undertaken because of confusion arising from a diversity of names, descriptions, and drawings of the human spinal subarachnoid septa and trabeculae in the standard texts and dictionaries. Sixty-two complete human cords were examined under the dissecting scope. The finely "woven" adult arachnoid membrane was two-layered, and there were essentially no connecting septa or trabeculae between the cord and the arachnoid membrane anteriorly. Posteriorly, in the upper cervical region there is a scanty series of connecting fibers and fenestrated sheets 1 or 2 mm on either side of the midline; these become progressively more extensive in the lower cervical region, remain extensive to the lumbar enlargement, beyond which they progressively dwindle to end abruptly at the filum terminale origin. Throughout the cauda equina, strands are haphazardly arranged connecting the roots and supporting blood vessels. These occasionally become tangentially adherent to the arachnoid membrane. Throughout the length there are many unexplained, redundant, nonbranching, beaded, thicker "rogue strands". All of the above are of a different character from the right-angle fiber arrangement of the denticulate ligament, the two leaves of which are often separated form segmental longitudinal tunnels. The nerve rootlets (fila radicularia) for each dermatome are joined by strands and webs to each other. There was no evidence of change in number or type of connection with age.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Manitoba</li></region><settlement><li>Winnipeg</li></settlement><orgName><li>Université du Manitoba</li></orgName></list><tree><country name="Canada"><region name="Manitoba"><name sortKey="Parkinson, D" sort="Parkinson, D" uniqKey="Parkinson D" first="D" last="Parkinson">D. Parkinson</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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