The aorta is the blood vessel with the widest lumen. In contrast, capillaries are the blood vessels with the narrowest lumen.
Capillary
Arteries
Lumen
The lumen is the size of the inside of the blood vessel. The type of blood vessel that has a lumen approximately the same diameter as a single red blood cell is a capillary.
called lumen
The lumen is the space within the blood vessel (or within any tubular structure).
Lumen
lumen?
The lumen is the inner open space or cavity of a tubular organ, such as a blood vessel or an intestine
lumen
the lumen
The lumen is the space within the blood vessel (or within any tubular structure).
I I think it is 1. size of the blood vessel lumen 2. blood viscosity 3. total blood vessel length
endothelium