Capillary is the name for any of the tiny blood vessels which connect the arteries to the veins.The word 'capillary' comes from the Latin 'capillaris'meaning 'about, or of, hair'
They are called capillary vessels. Some are so narrow that hemoglobin cells have to queue to go through them.
The blood vessels in between arteries and veins are the capillaries. But, they do not link them together, rather, they both have openings, through their capillaries, into the interstitial space which is the space between the cells of the tissues of the body.
capillary
Nicotine is the blood vessels' constrictor. Not all blood vessels, of course, but mainly the peripheral blood vessels, including the brain capillary blood vessels.
The capillaries are the blood vessels that connect arteries and veins. Capillaries are the site of gas exchange in the body.
Capillary
The answer you are looking for is most likely a "capillary". "Capillaries are the smallest of a body's blood vessels...which connect aterioles and venules, and enable the interchange of water, oxygen, and carbon dioxide, and many other nutrient and waste chemical substances between blood and surrounding tissues."
venule(veins)
artery- vein- capillary
capillary blood sugar vs venous blood sdugar
Artery, Vein and Capillary