Final answer:
Yes, albumin and fibrinogen are examples of plasma proteins. Albumin is the most abundant and helps in maintaining osmotic pressure and transport of substances. Fibrinogen, being the least abundant, is essential for blood clotting.
Step-by-step explanation:
Albumin and fibrinogen are indeed examples of plasma proteins. Albumin is the most abundant plasma protein, accounting for most of the osmotic pressure of plasma, which helps maintain blood volume and pressure. It is produced by the liver and acts as a transport vehicle for fatty acids and steroid hormones, as well as a key factor in retaining water in the circulatory system. On the other hand, fibrinogen is the least abundant plasma protein, also produced by the liver, and plays a critical role in blood clotting.
Fibrinogen and albumin are part of the three major groups of plasma proteins, with the second group being the globulins. The globulins include alpha, beta, and gamma subsets. The alpha and beta globulins transport various substances like iron and fat-soluble vitamins, while gamma globulins are involved in immunity and are also known as antibodies or immunoglobulins.