What is the yellow liquid component of blood called?

The yellow liquid component of blood is called plasma. Plasma is the fluid portion of blood that holds blood cells in suspension and makes up about 55% of total blood volume. It is composed mostly of water (approximately 90% of its volume) and contains various substances, including electrolytes, nutrients, hormones, proteins, and waste products.

The yellow color of plasma is primarily due to the presence of proteins, such as albumin, which helps maintain osmotic pressure and transport substances. Additionally, plasma serves crucial functions, including facilitating the transport of carbon dioxide and oxygen, providing a medium for cellular communication, and assisting in the regulation of body temperature.

This understanding helps clarify the roles and characteristics of different blood components and highlights the importance of plasma in maintaining physiological homeostasis. Other components mentioned, like serum, hemoglobin, and albumin, have distinct definitions and functions within the context of blood but do not refer to the entire yellow liquid component known as plasma.