What is the primary role of plasma in the blood?

The primary role of plasma in the blood is to transport nutrients, hormones, and proteins throughout the body. Plasma is the liquid component of blood, making up about 55% of its volume. It is primarily composed of water, which serves as a solvent for various substances. This allows plasma to carry glucose, amino acids, lipids, vitamins, hormones, and waste products to and from cells.

In addition to nutrients, plasma is also essential for the transport of proteins such as albumin, which helps maintain osmotic pressure, and globulins, which play roles in immune function. Additionally, plasma contains clotting factors that are vital for hemostasis. The effective circulation of these components is crucial for maintaining homeostasis and supporting the metabolic needs of tissues throughout the body.

This function of transportation is fundamental to the overall functioning of the circulatory system and is essential for delivering essential substances to cells while removing waste products.