geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Peristaltic flow in a tapered channel: Application to embryo transport within the uterine cavity


, : Peristaltic flow in a tapered channel: Application to embryo transport within the uterine cavity. Medical Engineering & Physics 23(7): 473-482, September

Cyclic uterine peristalsis plays a central role in assisting the transport of sperm to the fallopian tube and later in the conception process in transporting the embryo to a fundal site for implantation. Fulfillment of these essential events within the time limits of fertilization and implantation depends on concomitant intrauterine fluid motion induced by uterine wall motility. A model of wall-induced fluid flow within a finite tapered two-dimensional channel was developed to simulate intrauterine fluid flow pattern and transport phenomena due to symmetric and asymmetric wall displacements. The analysis showed that the transport phenomena are strongly dependent on the phase shift of wall displacement and the angle between the walls. The velocities, flow rates, pressure and the axial transport of massless particles are reduced to zero when contractions are completely out of phase. Cases of reflux and trapping in a tapered channel are discussed for the first time. The reflux phenomenon is most likely to occur when wall motility is asymmetric, especially when the angle between the walls increases, while trapping is enhanced as the asymmetric motility and the angle between the channel walls decrease. The relevance of the results to intrauterine fluid transport phenomena, embryo transfer and hydrosalpinx was explored.

US$19.90

PMID: 11574254

DOI: 10.1016/s1350-4533(01)00078-9


Other references

Watanabe, Y.; Takayama, T.; Inoue, K.; Higaki, T.; Aramaki, O.; Yamazaki, S.; Mihara, Y.; Watanabe, Y.; Isago, T.; Sasaki, K.; Sugitani, M.; Kondou, F.; Sakai, Y.; Matsuoka, S.; Kubota, N.; Nakata, Y.; Jinno, D., 2006: Living donor liver transplantation for hepatitis C cirrhosis. A 45-year-old man with hepatitis C cirrhosis underwent living donor liver transplantation (LDLT). The most crucial problem of liver transplantation with hepatitis C is a high recurrence rate of hepatitis C. Because the HCV-RNA in his blood increa...

Camera, K.; Mello, C.Fernando.; Ceretta, A.Paula.Chiapinotto.; Rubin, M.Antonello., 2007: Systemic administration of polyaminergic agents modulate fear conditioning in rats. Rationale The polyamines putrescine, spermine, and spermidine are a group of aliphatic amines that physiologically modulate the N-methyl-D-aspartate (NMDA) receptor, a glutamate receptor implicated in memory formation.Objectives Given the potenti...

Tikhonravova, N.M., 1974: Dynamics of activity of redox enzymes in ontogenesis of Colorado beetle (Leptinotarsa decemlineata Say). Soviet Journal of Developmental Biology 4(5): 483-485

Duquia, R.Pereira.; Almeida, H.Larangeira.; Vettorato, G.; Souza, P.Ricardo.Martins.; Schwartz, J., 2006: Neutrophilic dermatosis of the dorsal of the hands: acral sweet syndrome?. International Journal of Dermatology 45(1): 51-52

Anonymous, 2001: Guidelines for the diagnosis and treatment of acute pulmonary embolism. Italian Heart Journal. Supplement 2(2): 161-199

Cassim, S.; Bilodeau, M.; Vincent, C.; Lapierre, P., 2017: Novel Immunotherapies for Autoimmune Hepatitis. Autoimmune hepatitis (AIH) is a multifactorial autoimmune disease of unknown pathogenesis, characterized by a loss of immunological tolerance against liver autoantigens resulting in the progressive destruction of the hepatic parenchyma. Current tr...

Geier, F.A.J., 1948: Medical treatment of gallbladder disease. Medical Society Reporter 42(1): 17-17

Weegh, H.; Kampel, M., 2015: Acceptance Criteria of Ambient Assistant Living Technologies. Ambient Assisted Living (AAL) is a growing field resulting from aging populations in the majority of the well-developed regions of the world. AAL technologies aim at supporting independent living at home and therefore, include a wide variety of in...

Glende, E.A.; Recknagel, R.O., 1969: Biochemical basis for the in vitro pro-oxidant action of carbon tetrachloride. Experimental and Molecular Pathology 11(2): 172-185

Volokhin Y.G.; Ivanov V.V., 2007: Geochemistry and metal potential of Triassic carbonaceous silicites in Sikhote Alin. In the Triassic siliceous formation of Sikhote Alin, carbonaceous silicites occur in the late Olenekian-middle Anisian member (4-20 m) of alternating cherts and clayey cherts ("phtanite member") near the section base. The silicites are r...