Precapillary resistance is the modulation of blood flow by capillaries through vasomotion, either opening (dilating) and letting blood pass through, or by constricting their lumens, reducing bloodflow through the capillary bed (occluding the passage of blood). It is not entirely clear how precapillary resistance is created in many parts of the body.[1] Precapillary sphincters are smooth muscle structures that mediate the precapillary resistance in the mesenteric microcirculation.[1]
See also
References
- ^ a b Sakai T, Hosoyamada Y (September 2013). "Are the precapillary sphincters and metarterioles universal components of the microcirculation? An historical review". The Journal of Physiological Sciences. 63 (5): 319–31. doi:10.1007/s12576-013-0274-7. PMC 3751330. PMID 23824465.