Blood Supply to Muscles

Blood Supply to Muscles


All muscles contain blood vessels that branch into a fine network of tiny vessels called capillaries and venules. The capillaries are responsible for supplying oxygen-rich blood and nutrients to the tissues for energy, while the venules remove de-oxygenated blood and waste products, such as carbon dioxide, from the tissues.

The amount of blood required by a contracting skeletal muscle depends on the intensity of the exercise being performed. The blood supply needed for working muscles during a maximum strength workout may be as much as 100 times greater than the blood needed at rest.

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