Which best describes arteries and veins?

The exact answer is: Arteries carry blood away from the heart; veins carry blood back to the heart.

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.

the areas around the equator