Volume 1

A text-book of pathological anatomy and pathogenesis / by Ernst Ziegler ; translated and edited for English students by Donald MacAlister.

  • Ziegler, Ernst, 1849-1905.
Date:
1885-1887
Catalogue details

Licence: Public Domain Mark

Credit: A text-book of pathological anatomy and pathogenesis / by Ernst Ziegler ; translated and edited for English students by Donald MacAlister. Source: Wellcome Collection.

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    out processes which pass into the vessel-wall (e). Soon the processes appear outside the vessel (e), and thereupon the whole a b c d FlO. 22. InEEAMED OMENTUM E110M THE human subject. normal fibrous trabecula normal cndothelium small artery vein with white blood-cells peri- pherally disposed e wliitc blood-cells migrated or mi- grating / desquamated endothelium /j multinuclear cell <j migrated red blood-cells protoplasmic inass of the cell passes through the wall. The white eells in this way escape, migrate, or extravasate from the vessel (vein or capillary) by diapedesis. The first white blood-cells which migrate arc quickly followed by others, and in six to eight hours the veins and capillaries are surrounded by a multitude of wliitc cells, or leucocytcs, which gradually distribute themselves through the tissue by active loco- motion. From the capillaries, in which the circulation bccomes very irregulär and often stops altogether, there escape red blood-cells (g), as well as white. If the mesentery be slightly strained so that the circulation is brought to a stand-still (stasis) at somc point, the migration ceases there. Blood-cells do not escape from the arteries. Associated with the escape of the formed elements of the blood, there is always an escape of liquid. I bis is not in general directly perceptible, but is evidenced by the accumulation of liquid which takes place in the substance and on the surface of the mesentery.