I also received a supposed to be coming from CiTi PO BOX 790040 St. Louis MO 63179-9819.It said account ending in XXXX has been sold to Midland Credit Management, INC. Midlan...
Veins have much thinner walls, because the blood they carry is under low pressure. VEINS have valves that aid the return of blood to the heart and prevent blood from going backwards. ARTERIES do not have valves, except for the semi-lunar valves of the pulmonary artery and the aorta. ARTERIES have relatively narrow lumens, VEINS have relatively wide lumens.
Report Abuse. All veins carry bad blood that needs oxygen to the heart, to get it purified. Exceptions are the veins that contain good (oxygenated) blood to the heart walls -- to make the heart pump good blood to the whole of the body through the arteries.Sounds confusing but that is a fact.eport Abuse. All veins carry bad blood that needs oxygen to the heart, to get it purified. Exceptions are the veins that contain good (oxygenated) blood to the heart walls -- to make the heart pump good blood to the whole of the body through the arteries.