Venous blood is deoxygenated blood which travels from the peripheral blood vessels, via the venous system into the correct atrium of the center. Deoxygenated blood is then pumped by the precise ventricle to the lungs by way of the pulmonary artery which is divided in two branches, left and right to the left and proper lungs respectively. Blood is oxygenated within the lungs and returns to the left atrium by way of the pulmonary veins. H. It also has decrease concentrations of glucose and other nutrients and has increased concentrations of urea and different waste products. The distinction in the oxygen content material of arterial blood and venous blood is known as the arteriovenous oxygen difference. Most medical laboratory checks are carried out on venous blood, with the exception of arterial blood gasoline tests. Venous blood is obtained for lab work by venipuncture (additionally called phlebotomy), or by finger prick for small quantities. The shade of human blood ranges from bright crimson when oxygenated to a darker crimson when deoxygenated. It owes its colour to hemoglobin, to which oxygen binds. Deoxygenated blood is darker because of the difference in form of the crimson blood cell when oxygen binds to haemoglobin in the blood cell (oxygenated) versus does not bind to it (deoxygenated). Though veins may make it seem as such, BloodVitals SPO2 human blood is rarely naturally blue. The blue look of floor veins is caused largely by the scattering of blue light away from the skin of venous tissue if the vein is at 0.5 mm deep or more. Veins and arteries appear related when skin is removed and BloodVitals SPO2 are seen straight. Bostock, J. (1826). An elementary system of physiology. Misconceptions in Primary Science. McGraw-Hill International. 1 February 2010. pp. Kienle, Alwin

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Pub: 11 Aug 2025 02:07 UTC

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