Each 2.54 square centimetre (a square inch) of human skin has six metres (20ft) of blood vessels. Veins hold ... is caused by an impairment of blood circulation.

Vessels from the lung return oxygenated blood to the left atrium (pulmonary vein ... Heart has completely separated: 2 atria, 2 ventricles, 4 chambers, and adult bird has complete double circulation: ...

All blood vessels are specifically structured to perform ... away from the heart (usually oxygenated blood, except for the pulmonary artery) Carry blood towards the heart (usually deoxygenated ...

veins carry deoxygenated blood back to the heart The pulmonary circuit transports blood to the lungs. The blood is oxygenated there and then carried back to the heart. Exchange of oxygen and ...

The treatment of pulmonary arterial hypertension—once ... leading to an inability to support the circulation and subsequent death. 1 ...

Treating PAH patient-derived blood vessel cells with calcitriol reduced vitamin D receptor deficiency and suppressed their ...

Inflammation caused by lupus may affect the lungs in many ways, and can involve the membrane lining of the lungs, the lungs themselves, the blood vessels within the lungs ... Blood clots that block ...

Increasing data demonstrate alterations in ET-1 signaling in newborns, infants, and children with congenital heart defects that are associated with alterations in pulmonary blood flow. This review ...