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. 1  Transport blood from arteries to capillaries.  Arterioles are the main regulators of blood flow and pressure.
http://www.ivyroses.com/HumanBody/Blood/Blood_Vessels.php
There are networks of capillaries in most of the organs and tissues of the body. These capillaries are supplied with blood by arterioles and drained by venules. Capillary walls are only one cell thick (see diagram), which permits exchanges of material between the contents of the capillary and the surrounding tissue.
http://www.ivyroses.com/HumanBody/Blood/Blood_Vessels.php
Structure and Functions of Blood Vessels. The walls (outer structure) of arteries contain smooth muscle fibre that contract and relax under the instructions of the sympathetic nervous system. 1  Transport blood away from the heart.  Transport oxygenated blood only (except in the case of the pulmonary artery).
http://www.ivyroses.com/HumanBody/Blood/Blood_Vessels.php
Resistance occurs where the vessels away from the heart oppose the flow of blood. Resistance is an accumulation of three different factors: blood viscosity, blood vessel length, and vessel radius.
https://en.wikipedia.org/wiki/Blood_vessel
Blood vessels do not actively engage in the transport of blood (they have no appreciable peristalsis), but arteries—and veins to a degree—can regulate their inner diameter by contraction of the muscular layer. This changes the blood flow to downstream organs, and is determined by the autonomic nervous system.
https://en.wikipedia.org/wiki/Blood_vessel
Function is to supply the tissues of the body with the components of blood, and (carried by the blood), and also to remove waste from the surrounding cells ... as opposed to simply moving the blood around the body (in the case of other blood vessels)
http://www.ivyroses.com/HumanBody/Blood/Blood_Vessels.php
There are three major types of blood vessels: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart.
https://en.wikipedia.org/wiki/Blood_vessel
The following diagram summarises the sequence of blood flow through the heart, arteries, arterioles, capillaries, venules, veins, then back to the heart: The following diagram summarises the structural differences between different types of blood vessels.
http://www.ivyroses.com/HumanBody/Blood/Blood_Vessels.php
Its called the tunica externa(adventitia) and it consists of elastic and collagen fibers. Also contain numerous nerves and tiny vessels that supply the tissue of the vessel wall. Name two functions of the tunica externa. Due to their plentiful elastic fibers, arteries normally have a high __________.
https://quizlet.com/64645053/the-cardiovascular-system-blood-vessels-and-hemodynamics-flash-cards/
There is a layer of muscle surrounding the arteries and the veins which help contract and expand the vessels. This creates enough pressure for blood to be pumped around the body. Blood vessels are part of the circulatory system, together with the heart and the blood.
https://en.wikipedia.org/wiki/Blood_vessel
type of blood vessels and functions
The types of blood vessels are: the arteries, which carry the blood away from the heart; the capillaries, which enable the actual exchange of water and chemicals between the blood and the tissues; and the veins, which carry blood from the capillaries back toward the heart. The type of blood vessels and their functions are, the arteries which carry the blood away from the heart, the capillaries which enable the actual exchange of water and chemicals between the blood and the tissues, and the veins which carry blood from the capillaries back toward the heart.