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"Venoules" is likely a misspelling of "venule," which is a small blood vessel that carries blood from capillaries to veins. These vessels are important for returning blood from tissues back to the heart.
Venule.
capillaries or blood vessels
Capillaries are blood vessels in the body that help transfer nutrients and waste between blood and tissue. They connect two other blood vessels, the arteriole and the venule.
Capillaries send blood to both arteries and veins.
Venules are small blood vessels in the circulatory system that connect capillaries to larger veins. They have thin walls and are responsible for carrying blood back to the heart from the capillaries. Venules appear as small, thin-walled tubes that are more visible than capillaries but smaller than veins.
these are not called blood tubes they are called blood vessels and their are three types of blood vessels arteries which divides into arterioles and arterioles re divide into capillaries capillaries join to form venule and venule join to form veins.
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.
Heart > artery > arteriole > capillary > venule > vein > heart
Venules are the microscopic vessels that continue from the capillaries and merge to form veins. Veins carry blood back to the atria, leading to the heart...
Capillaries
The structure of an arteriole is:Arterioles are tiny branches of arteries that lead to capillaries.These are also under the control of the sympathetic nervous system, and constrict and dialate, to regulate blood flow.