Do the veins of the systemic circuit carry oxygenated or deoxygenated blood? Do the veins of the pulmonary circuit carry oxygenated or deoxygenated blood?

Veins and arteries are just nomenclature:one carries oxygenated blood the other de-oxygenated to various end points of the body. You need a return path to the heart/lung system: this is...

Deoxygenated blood enters the heart via superior and inferior vena cava's then into the right atrium--> right ventricle then the pulmonary artery Oxygenated blood returns via the pulmonary veins-->left atrium-->left...

The only difference between Pulmonary veins and other veins is that , pulmonary vein carry oxygenated blood towards heart while other veins carry deoxygenated blood towards heart.

The primary function of the arteries is to bring blood away from the heart like the pulmonary artery bringing blood from the heart to the lungs. The primary function of...

The Aorta is the main highway that receives blood from the heart. It splits into Arteries, these split into smaller arterioles, then even smaller capillaries . After the Erythrocytes...

All the artery carry blood away from heart while all veins carry blood towards heart. All the artery carry oxygenated blood except Pulmonary artery and All veins carry deoxygenated blood...

.......Oxygenated Blood...................Deoxygenated Blood......... ..... one $Hb$ binds to $4 O_2$.................one $Hb$ binds to $1 CO_2$ .......$97%$ $O_2$ with Hb..............................$23% CO_2$ with Hb ...........$3% O_2$ in plasma.............................$7% CO_2$ in plasma...

Heparin is an anticoagulant which does not allow the blood to clot in the blood vessels

The right atrium pumps blood to the right ventricle which then pumps the blood into the lungs where it is oxygenated and then returns to the left atrium. From the...

"De-oxygenated" blood is returning to the lungs with the hemoglobin depleted of oxygen (absorbed by the cells). The blood will also be carrying the resulting carbon dioxide back to the...