Blood tissues are a specialized type of connective tissue that plays a crucial role in the body. They consist of liquid plasma, which carries nutrients, hormones, and waste products, along with three main types of cells: red blood cells, white blood cells, and platelets. Red blood cells transport oxygen from the lungs to the body's tissues, while white blood cells are essential for the immune response, helping to fight infections. Platelets are involved in blood clotting, preventing excessive bleeding. The composition of blood tissues allows for efficient transportation and communication within the body. Plasma makes up about 55% of blood volume, while the cellular components account for the remaining 45%. Blood tissues are vital for maintaining homeostasis, regulating body temperature, and facilitating the exchange of gases, nutrients, and waste products between cells and their environment.