Enlist the major types of cells found in blood and their specific functions.

The major types of cells found in blood and their specific functions are: 
1. Red Blood Cells (Erythrocytes): Transport oxygen from the lungs to the body tissues and carbon dioxide from tissues back to the lungs. 
2. White Blood Cells (Leukocytes): Form part of the immune system, fighting infections and foreign invaders. They include neutrophils, lymphocytes, monocytes, eosinophils, and basophils. 
3. Platelets (Thrombocytes): Small cell fragments crucial for blood clotting to stop bleeding.