what is systemic circulation
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Systemic circulation refers to the part of the cardiovascular system that carries oxygen-rich blood away from the heart to the body's organs and tissues, and returns oxygen-poor blood back to the heart. It involves the large network of blood vessels, including arteries, arterioles, capillaries, venules, and veins, throughout the body. The systemic circulation is responsible for delivering oxygen and nutrients to the body's cells, while also removing waste products and carbon dioxide.
So does it go through the body and back to the heart?
Yes, that is correct. Systemic circulation involves the circulation of oxygenated blood from the heart to the organs and tissues of the body, and then the return of deoxygenated blood back to the heart. The oxygenated blood is pumped out of the heart through the aorta and its branches, reaching the tissues through smaller arteries, arterioles, and finally entering the capillaries where exchange of nutrients and gases occurs. After this exchange, the deoxygenated blood leaves the capillaries and enters venules, which merge to form veins. These veins then carry the deoxygenated blood back to the heart, specifically the right atrium, where it will be sent to the lungs for oxygenation before entering the systemic circulation again.
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