What is the primary role of plasma in blood?

The primary role of plasma in blood is to carry nutrients and hormones throughout the body. Plasma is the liquid component of blood that makes up about 55% of its volume and is primarily composed of water, electrolytes, proteins, nutrients, hormones, and waste products. It serves as a medium for transporting essential substances such as glucose, amino acids, and various hormones from endocrine glands to target organs and tissues. This transportation is vital for maintaining homeostasis and supporting metabolic processes.

While other components of blood, such as red blood cells, are responsible for transporting oxygen, plasma's role encompasses a broader range of functions, including transporting nutrients. Additionally, plasma contains clotting factors that support blood clotting and serves as a medium for immune cells, but its primary function is primarily related to nutrient and hormone transport.