What Is the Mesangium?

The mesangial body is composed of mesangial cells and mesangial matrix. It is the axial tissue between the leaflets of the glomerular capillary plexus, and is directly adjacent to the endothelium of the capillaries. . Mesangial cells have multiple functions. There are contractile fibrils in this cell. By stimulating the contraction of fibrils, the surface area of glomerular capillaries can be adjusted to control the glomerular blood flow. ^[1]