Abstract：
UNLABELLED:Numerous fibrous elements known as the Willis chords are situated in the light of the superior sagittal sinus. The paper is aimed at a comparative evaluation of the appearance of the Willis chords appearing in the superior sagittal sinus during various periods of human life and a determination of their role. The material comprises 200 brains at the foetal period as well as 200 adult and senile brains. The experimental methods include injection methods, infrared light, the Pickworth method and computer image analysis. During adulthood, various elements such as valvulae, divisions, plates, beams and arachnoidal granulation are situated in the light of superior sagittal sinus. The number of arachnoidal granulations increases continuously due to age, new ones appearing close to those already in existence and old granulation spreading. The superior sagittal sinus contains numerous valvulae similar to the feedback flaps typical for hydraulic systems. Divisions act as orifices which lead to a fall in pressure and induce blood into the sinus. Large differences between the cross-sections of meningeal veins and bridge veins were noticed, which resembles the structure of ejector. The blood flow in the bridge veins ending at the superior sagittal sinus is controlled by the valvulae and their geometrical form changes according to age. CONCLUSION:The Willis chords situated in the superior sagittal sinus may control the circulation. Their number grows with age and their morphology changes.
journal_name
Folia Morphol (Warsz)journal_title
Folia morphologicaauthors
Kedzia A,Kedzia Wkeywords:
subject
Has Abstractpub_date
2003-01-01 00:00:00pages
255-7issue
3eissn
0015-5659issn
1644-3284journal_volume
62pub_type
杂志文章abstract：:We encountered some multiple vessel variations in the retropubic region of a 55-year-old male cadaver. The obturator artery had its origin from the external iliac artery, and inferior epigastric artery from the femoral artery. Additionally, an anastomosis between obturator and inferior epigastric veins (venous Crown o...
journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:Investigations were made on serial sections of human embryos at developmental stage 23 (56 days). The oculomotor complex in embryos at this stage consists of lateral, median, and accessory nuclei. The lateral (chief) nucleus forms the greatest part of the oculomotor complex and it is subdivided into ventromedial and d...
journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：BACKGROUND:The aim of our study was to determine the localisation of the inferior margin of the optic canal in relation to the infraorbital canal/groove complex (IOC/G complex) and zygomaticoorbitale (ZO) as the potential useful landmarks for reducing dangerous complications following surgical and invasive procedures. ...
journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.2015.0013
更新日期：2015-01-01 00:00:00
abstract：:The aim of the paper is computer transformation of the transversal research results of male (214) and female (178) genital internal organs (examined in 4 months's intervals) in a way enabling longitudinal evaluation. ...
journal_title：Folia morphologica
pub_type： 杂志文章
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更新日期：1997-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2007-08-01 00:00:00
abstract：:During routine dissections carried out in the course of our medical gross anatomy work, an unusual structure was found unilaterally on the left side of an adult male cadaver. Upon investigation, this was determined to be a hugely dilated transverse facial artery. Also noted was the complete absence of the ipsilateral ...
journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2005-08-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
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更新日期：2014-02-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/fm.2013.0033
更新日期：2013-08-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2018.0026
更新日期：2018-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
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更新日期：2014-08-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2001-08-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2016.0018
更新日期：2016-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2008-02-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：1990-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2019.0118
更新日期：2020-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2011-02-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2019.0049
更新日期：2020-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2020.0030
更新日期：2020-03-11 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2010-08-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：1991-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
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更新日期：2019-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2016.0012
更新日期：2016-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：10.5603/FM.a2017.0114
更新日期：2018-01-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2004-02-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：2004-02-01 00:00:00
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journal_title：Folia morphologica
pub_type： 杂志文章
doi：
更新日期：1989-01-01 00:00:00
