Final answer:
Albumin is the most abundant protein in human blood plasma and is synthesized in the liver. It plays a critical role in transporting substances, maintaining pH, and especially in regulating osmotic pressure to assist in blood volume and blood pressure maintenance.
Step-by-step explanation:
The most abundant protein in human blood plasma is Albumin, it constitutes about half of the plasma protein. Albumin is synthesized in the liver and has multiple functions within the body. It helps in transporting hormones and fatty acids, in buffering pH, and most importantly, in maintaining osmotic pressures. This protein is crucial as it maintains blood volume and blood pressure by holding water inside the blood vessels and drawing water into the bloodstream from the tissues.
Compared to Albumin, other plasma proteins include Immunoglobulins and Fibrinogen. Immunoglobulins, also known as antibodies, are produced by specialized B lymphocytes and are essential for the immune response, while Fibrinogen produced by the liver accounts for about 7 percent of total plasma protein and is key in the blood clotting process.