The fluid part of blood is called plasma. Plasma is a yellowish liquid component of blood that holds blood cells in suspension. It is composed mostly of water, along with proteins, electrolytes, gases, hormones, and waste products. Plasma makes up about 55% of total blood volume and is crucial for maintaining blood pressure and transporting nutrients, hormones, and waste products throughout the body. Plasma plays a vital role in the body's immune response, as it contains antibodies and other proteins that help fight off infections and diseases. It also helps to regulate body temperature and maintain pH balance. In addition, plasma is essential for clotting blood and preventing excessive bleeding. One key protein found in plasma is albumin, which helps to maintain blood volume and pressure. Another important protein is fibrinogen, which is essential for blood clotting. Electrolytes such as sodium, potassium, and calcium are also present in plasma and help to regulate fluid balance and nerve function. To learn more about the composition and functions of plasma, visit websites such as [Mayo Clinic](https://www.mayoclinic.org/diseases-conditions/low-blood-protein/symptoms-causes/syc-20372235) or [WebMD](https://www.webmd.com/heart/anatomy-picture-of-blood#1). These resources offer detailed information on the role of plasma in the body and how imbalances can lead to various health problems. Overall, plasma is a crucial component of blood that serves many essential functions in the body. Without plasma, our blood would not be able to perform its vital tasks of transporting nutrients, oxygen, and waste products throughout the body. Understanding the role of plasma in the circulatory system can help individuals better appreciate the complexity and importance of blood in maintaining overall health and well-being. In conclusion, the fluid part of blood, known as plasma, is a complex mixture of water, proteins, electrolytes, and other substances that play a critical role in maintaining the body's health and functioning. To learn more about plasma and its functions, explore the resources provided above for more in-depth information.

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