What is the largest component of blood by volume?

Plasma is indeed the largest component of blood by volume, accounting for approximately 55% of the total blood volume. It plays a crucial role in transporting nutrients, hormones, and proteins throughout the body. Plasma also contains waste products and is essential for maintaining blood pressure and regulating body temperature.

The significance of plasma lies in its composition, which includes water, electrolytes, nutrients, waste products, proteins, and hormones. The proteins in plasma, such as albumin and globulins, are vital for maintaining osmotic pressure and serving various functions, including immune responses and blood clotting.

Given its extensive role and high volume in comparison to other components of blood, plasma is fundamental for various physiological processes in the body. The other components, while important, do not constitute the majority of blood volume.