As blood makes its way through the 60,000 miles [100,000 km] of our circulatory system, it comes into contact with nearly every tissue in our body, including the heart, kidneys, liver, and lungs ​ — vital organs that process and rely on blood.
Kulgedes läbi inimese 100 000 kilomeetri pikkuse vereringesüsteemi, on veri kontaktis organismi peaaegu iga koega, kaasa arvatud südame, neerude, maksa ja kopsudega – verd töötlevate ja verest sõltuvate elutähtsate organitega.