Abstract：
:The ontogeny of the nasolacrimal ducts (NLD) and canals (NLC) are investigated in strepsirrhine and haplorhine primates. Developmental series of serially sectioned fetal, perinatal and adult specimens, in combination with juvenile and adult skulls subjected to high-resolution computed tomography, reveal that the vertical NLC and NLD of adult tarsiers and anthropoids are produced by the degeneration of a more horizontal anterior arm of the NLD that is present only transiently in haplorhines, but is maintained throughout life in strepsirrhines. This degeneration manifests as an 'unzipping' of the anterior arm by means of progressive enlargement (in a rostral direction) of a caudally placed opening of the NLD (at the base of the vertical NLC), followed by breakdown of the resulting epithelial groove. The similar mode by which the anterior arm of the membranous NLD degenerates in tarsiers and anthropoids strongly suggests that the conditions in these two taxa are homologous, and provides additional evidence for a monophyletic Haplorhini. The functional relationship between the nasolacrimal duct and the vomeronasal organ is reviewed in light of this evidence, and it is suggested that these changes in the haplorhine NLD were functionally linked to the development of anatomical haplorhinism of the oronasal complex.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Rossie JB,Smith TDdoi
10.1111/j.1469-7580.2006.00682.xsubject
Has Abstractpub_date
2007-02-01 00:00:00pages
195-208issue
2eissn
0021-8782issn
1469-7580pii
JOA682journal_volume
210pub_type
杂志文章abstract：:Providing formative assessment opportunities has been recognised as a significant benefit to student learning. The outcome of any formative assessment should be one that ultimately helps improve student learning through familiarising students with the levels of learning required, informing them about gaps in their lea...
journal_title：Journal of anatomy
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abstract：:The development of Schmidt-Lanterman incisures was investigated in the rat sural nerve during an active phase of postnatal myelination (5-21 days post partum). Two distinct populations of incisures were recognised and the following nomenclature for their developmental stages is proposed. Primary incisures which appear...
journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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doi：
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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pub_type： 杂志文章
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journal_title：Journal of anatomy
pub_type： 杂志文章
doi：
更新日期：1988-10-01 00:00:00
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journal_title：Journal of anatomy
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doi：
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journal_title：Journal of anatomy
pub_type： 杂志文章
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更新日期：1988-02-01 00:00:00
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journal_title：Journal of anatomy
pub_type： 杂志文章,评审
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pub_type： 杂志文章
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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journal_title：Journal of anatomy
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更新日期：1984-08-01 00:00:00
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