Final answer:
The colloid that has no effect on coagulation is serum, which is plasma without coagulation factors like fibrinogen. Albumin, another blood colloid, doesn't affect coagulation as it's not involved in clotting. Colloids contribute to BCOP, maintaining osmotic balance and transport in the blood.
Step-by-step explanation:
The colloid that has no effect on coagulation is often referred to as serum. Serum is essentially plasma without the coagulation factors, which includes fibrinogen and other substances vital for the clotting process. Therefore, when discussing colloids in the context of blood and coagulation, it's important to understand that while plasma contains these coagulation factors, serum does not. Albumin, a type of colloid, is a significant component of both plasma and serum, but on its own, does not affect coagulation since it is not involved in the clotting process.
Colloids in the blood, such as albumin and globulins, are large molecules that are dispersed or suspended within the plasma. These colloids contribute to the blood colloidal osmotic pressure (BCOP), which is crucial in capillary exchange and the reabsorption of water into the bloodstream. Amidst various colloids, albumin is the most abundant protein in blood plasma and is responsible for a significant portion of the BCOP. It acts to maintain the blood's osmotic balance and carries various substances through the circulation.
It's also worth noting that not all proteins, including albumins and globulins, are heat coagulable. Heat tends to denature these proteins and cause them to aggregate, but in the context of blood colloids, this is unrelated to the body's natural coagulation mechanisms which are facilitated by specific coagulation factors absent in serum.