sheath of Schweigger-Seidel


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el·lip·soid

(ē-lip'soyd),
1. A spheric or spindle-shaped condensation of phagocytic macrophages in a reticular stroma investing the wall of the splenic arterial capillaries shortly before they release their blood in the cords of red pulp.
2. The outer end of the inner segment of the retinal rods and cones.
3. Having the shape of an ellipse or oval.
[G. ellips, oval, + eidos, form]

sheath of Schweigger-Seidel

The thickened wall of a sheathed artery of the spleen.
See also: sheath

Schweigger-Seidel,

Franz, German physiologist, 1834-1871.
sheath of Schweigger-Seidel - (1) a spherical or spindle-shaped condensation of phagocytic macrophages in a reticular stroma investing the wall of the splenic arterial capillaries; - (2) the outer end of the inner segment of the retinal rods and cones. Synonym(s): ellipsoid