- The matrix in blood is a fluid (liquid) called plasma
- It contains proteins, salts and hormones
- The cells suspended in it are red blood cells (RBCs), white blood cells (WBCs) and platelets .
- Blood acts as a connective tissue as it transports gases, digested food, hormones and waste materials from one part of the body to another .
- The white blood cells (WBCs) are further of different types