Which liver-produced protein helps maintain blood volume?

Study liver anatomy and function with our medical students test. Engage with detailed multiple choice questions, each with hints and explanations. Prepare effectively for your test!

Blood volume in the vessels is helped by a protein that keeps fluid inside the bloodstream. This protein is albumin, made primarily by the liver. Albumin creates colloid osmotic (oncotic) pressure, which pulls water from the surrounding tissues back into the capillaries, helping to maintain intravascular volume and prevent edema. When albumin is reduced, fluid leaks into the interstitial space, leading to edema and a lower effective blood volume, a common issue in liver disease or malnutrition.

Hemoglobin is the oxygen-carrying component of red blood cells, not produced by the liver. Transferrin is a liver-made protein that carries iron in the blood, but its role is iron transport, not maintaining blood volume. Fibrinogen is a liver-produced clotting factor important for coagulation, not for regulating fluid balance. Thus, albumin best fits the function of maintaining blood volume.