Even the pulmonary vessels become engorged".
In general, blood vessels become less elastic with advancing age.
These are given fake registration papers and, like so many hijacked vessels, become "phantom" ships.
In a number of species the vessels become occluded by cellular ingrowths from surrounding living cells.
When we are young our bodies can more easily accommodate sudden fluctuations in blood pressure, but as we get older our blood vessels become stiffer and less flexible.
When they dock onto receptors in nearby blood vessels, the vessels become porous and leaky, and fluids begin to ooze into the tissues of your nose and eyes.
Trucco said: "When changes occur in some parts of the body, you can see differences in the retinal vessels, eg in width, some vessels become thinner; some become larger; differences in the tortuosity,... or how wriggly the vessels become; there are also differences in the angles when vessels split in two.
Too soon, though, the vessels become lumbering, having to fold down their masts, like ships that can't pass in the night.
Chickens have an organ consisting of a small amount of erectile tissue, but lymph vessels, rather than blood vessels, become engorged.
In response to these demands, the liver increases in size and weight, and its blood vessels become larger, but otherwise its anatomic structure changes relatively little during pregnancy.
In the area around the site of the arteriovenous fistula, the blood vessels become dilated and bacterial infection of the artery lining may develop.
