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www.medicinenet.com/script/main/art.asp?articlekey=2622

Capillaries: Capillaries are the smallest of blood vessels. They serve to distribute oxygenated blood from arteries to the tissues of the body and to feed deoxygenated blood from the tissues back into the veins. The capillaries are thus a central component in the circulatory system, essentially between the arteries and the veins. When pink ...

www.verywellhealth.com/what-are-capillaries-2249069

Capillaries may be thought of as the central portion of circulation. Blood leaves the heart through the aorta and the pulmonary arteries traveling to the rest of the body and to the lungs respectively. These large arteries become smaller arterioles and eventually narrow to form the capillary bed.

study.com/academy/lesson/capillaries-function-definition...

Capillaries are very thin blood vessels that were first discovered in frog lungs in 1661. ... Capillaries: Function & Definition. ... Capillary beds connect arteries and veins so that blood can be ...

en.wikipedia.org/wiki/Capillary

The capillaries then join and widen to become venules, which in turn widen and converge to become veins, which then return blood back to the heart through the venae cavae. Individual capillaries are part of the capillary bed, an interweaving network of capillaries supplying tissues and organs.

www.webmd.com/.../qa/what-is-the-definition-of-capillaries

What is the definition of capillaries? ANSWER Capillaries are tiny blood vessels connecting arteries to veins. These blood vessels carry oxygen and nutrients to individual cells throughout the ...

www.livescience.com/34655-human-heart.html

Human heart function. The heart circulates blood through two pathways: the pulmonary circuit and the systemic circuit. In the pulmonary circuit, deoxygenated blood leaves the right ventricle of ...

www.reference.com/science/main-function-capillaries-bd9e60...

The main function of capillaries is enabling the exchange between water, oxygen, carbon dioxide, nutrients and many other substances between blood and the surrounding tissues. The capillaries also connect the arterioles and venules to create uninterrupted blood flow through the body.

en.wikipedia.org/wiki/Blood_vessel

Blood vessels function to transport blood.In general, arteries and arterioles transport oxygenated blood from the lungs to the body and its organs, and veins and venules transport deoxygenated blood from the body to the lungs.Blood vessels also circulate blood throughout the circulatory system Oxygen (bound to hemoglobin in red blood cells) is the most critical nutrient carried by the blood.

study.com/.../what-are-arteries-function-definition-quiz.html

Video: What are Arteries? - Function & Definition. ... your circulatory system is a 'closed loop' consisting of your heart, arteries, arterioles, capillaries, venules and veins. Blood leaves your ...

biologydictionary.net/circulatory-system

Vertebrates have a closed circulatory system, which means that blood remains within blood vessels and does not directly interact with body tissues. In birds and mammals, the primary organ of the cardiovascular system is a four-chambered heart, with its associated blood vessels. In other vertebrates, the heart can have either two or three chambers.