An arteriole is one of the small branches of an artery, especially one which connects with capillaries.
arteriols
arteriols
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Arteries divide into smaller vessels called Arteriols. Arteriols subdivide into even smaller vessels called capillaries, where oxygen, nutrients, hormones are delivered to the tissues of the body. Waste products are also picked up by capillaries and delivered to venules which grow into larger vessels called veins. Veins deliver deoxygenated blood back to the heart.
The arteries (and arterioles) still carry the pulsing from the heart. By the time the blood flow reaches the capillaries and the veins, it is lost. This helps to keep the blood flowing in the right direction.
Arteries divide into smaller vessels called Arteriols. Arteriols subdivide into even smaller vessels called capillaries, where oxygen, nutrients, hormones are delivered to the tissues of the body. Waste products are also picked up by capillaries and delivered to venules which grow into larger vessels called veins. Veins deliver deoxygenated blood back to the heart.
There are mainly two parts in Cardiovascular system. 1. Heart. & 2.Blood vessels. Blood vessels contains arterial system(aorta-artery-arteriols-capillary) & Venous system (venacava-vein-venules-capillary)
There are mainly two parts in Cardiovascular system. 1. Heart. & 2.Blood vessels. Blood vessels contains arterial system(aorta-artery-arteriols-capillary) & Venous system (venacava-vein-venules-capillary)
An arteriole is like a 'mini artery' So it has a very similar function to an artery. Allows exchange of gasses (carbon dioxide and oxygen) and nutrients (waste products like urea and substances like glucose)
you find non return valves inside the heart, lymph and veines, avoiding fluids from flowing backwards > [veinous blood in veines and heart, oxygenated blood in the heart]. Lymph vessels have valves also. The portal vein though contains no valves. All arteries including arteriols and capillaries have no valves.
Arterioles do not have valves; valves are typically found in veins to prevent backflow of blood. Arterioles are small blood vessels that regulate blood flow and pressure by constricting or dilating. They do not pulsate like arteries, but the blood flow through them can still exhibit a steady rhythmic pressure due to the heart's pumping action. Instead of pulsating, arterioles maintain a continuous flow of blood.