title: Experimental study of the morphology of cerebral bridging vein.
abstract: OBJECTIVE
  To investigate the morphological properties of pig cerebral bridging vein.
  
  
  METHODS
  The morphology and fibre arrangement of 15 cerebral bridging veins obtained from 7 Danish Yorkshire landrace pigs were observed.
  
  
  RESULTS
  There was a narrow region at the junction of the cerebral bridging veins and superior sagittal sinus termed "outflow cuff segment". The diameter and length of outflow cuff segment were much smaller and the thickness was higher than those of the cerebral bridging veins ( P < 0.01), and circumferential collagen fibres were most dense in the outflow cuff segment. The opening angle of the outflow cuff segment and the cerebral bridging veins were 115 +/- 4 degrees and 120 +/- 4 degrees ( P > 0.05).
  
  
  CONCLUSIONS
  There were differences in fibre arrangement and morphological properties between the outflow cuff segment and the cerebral bridging vein, just like a resistance valve, the outflow cuff segment may play an important role in stabilizing cerebral venous outflow and regulating intracranial pressure.
authors.affiliation: Department of Neurosurgery, Second Affiliated Hospital of Shandong Medical University, Jinan 250033. Pangqi@jn-public.sd.cninfo.net
authors.forename: Q
authors.initials: Q
authors.lastname: Pang
authors.forename: C
authors.initials: C
authors.lastname: Wang
authors.forename: Y
authors.initials: Y
authors.lastname: Hu
authors.forename: G
authors.initials: G
authors.lastname: Xu
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: X
authors.initials: X
authors.lastname: Hao
authors.forename: Q
authors.initials: Q
authors.lastname: Zhang
authors.forename: H
authors.initials: H
authors.lastname: Gregerson
mesh_terms: D000818:Animals; D001699:Biometry; D002550:Cerebral Veins / Q000033:anatomy & histology* / Q000502:physiology; D002560:Cerebrovascular Circulation; D007427:Intracranial Pressure; D013552:Swine