He knew nothing of the vessels which we now speak of as capillaries.
Well, Malpighi tried to discover the capillaries by this method, and failed.
Hence it is argued that their capillaries show the least permeability.
This vein runs to the liver, where it breaks up into capillaries.
The whole stream, on the other hand, passes through the capillaries of the lungs.
This it does by passing it through the walls of the capillaries.
And the first of these is the proportion of arterial to venous blood in the capillaries.
From the capillaries the blood flows into the veins and back to the heart.
They then carry the air through the arteries to the capillaries.
The veins take the blood from the capillaries in all parts of the body.