Blood circulates through blood vessels.

Blood flows through blood vessels.

The blood vessels of a giraffe have valves that prevent excessive blood flow to the brain.

Venules and arterioles are small diameter blood vessels that connect capillaries to veins and arteries.

The opah is equipped with specialized blood vessels that carry warm blood to its gills to rewarm the blood that cools as the fish breathes and absorbs oxygen from the water.

The vaccine isn't injected into the blood vessels, but into the muscles.

The umbilical cord contains Wharton's jelly, a gelatinous substance which protects the blood vessels inside and acts as a mucous connective tissue.

I think that blood vessels are bursting in my lungs when I cough.

The scientists are also working to develop artificial blood vessels and miniature models of a human body using 3d bio printing.