Arterial blood tends to be what while venous is what?

Oxygen Content

- Arterial blood is oxygen-rich, while venous blood is oxygen-poor.

This difference in oxygen content is due to the process of respiration. During respiration, oxygen from the air is taken into the lungs, where it diffuses into the bloodstream. The oxygenated blood is then pumped by the heart through the arteries to the rest of the body, where it is used by cells for energy production.

The deoxygenated blood returns to the heart through the veins, where it is pumped back to the lungs to be reoxygenated.