What is the main function of blood plasma?

The primary function of blood plasma is to transport nutrients, hormones, and waste products throughout the body. Plasma, which is the liquid component of blood, makes up about 55% of total blood volume and serves as the medium for carrying essential substances to various cells and tissues.

It contains proteins, electrolytes, nutrients (such as glucose, vitamins, and minerals), and waste products, ensuring that these materials are distributed throughout the body. Plasma also plays a crucial role in maintaining blood pressure and volume, as well as facilitating thermoregulation and the pH balance in the body.

Other functions attributed to blood components, such as the formation of blood cells or structural support to cells, are actually carried out by different elements within the blood. While oxygen transport is critically important, this is primarily the role of red blood cells rather than plasma. Therefore, understanding that plasma's main role is nutrient and hormone transport helps clarify its importance in overall bodily function.