In addition to nutrient delivery, what other role does plasma play?

Plasma plays a vital role in the circulatory system beyond just nutrient delivery. One of its primary functions is collecting waste products from cells, which is crucial for maintaining homeostasis. As blood circulates through the body, plasma carries carbon dioxide, urea, and other metabolic waste products from the tissues to the organs responsible for excretion, such as the kidneys and lungs. This process ensures that harmful substances are efficiently removed from the body, preventing toxicity and helping to maintain a balanced internal environment.

The other roles mentioned in the answer choices do not accurately reflect the primary function of plasma. While it plays a part in various bodily processes, the specific collection of waste is a critical aspect of plasma's function in maintaining overall health and equilibrium within the body.