Abstract
Observations of flow velocity profiles over frog mucociliated palate are used to estimate viscosity, shear rate and shear stress in the periciliary flow field. The ability of cilia to generate significant shear stress at long distances and their utility as rhoeometers are examined. It is proposed that the depth of significant ciliary shear penetration into the periciliary fluid is sufficient to move mucus masses well beyond the ciliary tips, obviating the need for tip penetration where anchoring phenomena are sufficiently reduced.
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