Final answer:
Another name for a white blood cell is a leukocyte, which is pivotal in defending the body against infectious diseases. Neutrophils are a type of leukocyte which constitute a significant proportion of the white blood cell count.
Step-by-step explanation:
Another name for a white blood cell is a leukocyte. White blood cells are critical components of the immune system, involved in defending the body against pathogens, such as bacteria and viruses. They are part of the formed elements in the blood, which include red blood cells (erythrocytes), white blood cells (leukocytes), and platelets (thrombocytes). While erythrocytes carry oxygen to the body's tissues, leukocytes are primarily involved in the immune response. A neutrophil is one type of leukocyte, often making up the largest percentage of white blood cells in the bloodstream and playing a critical role in fighting infections. Therefore, the correct answer to what another name for a white blood cell is: 1) Leukocyte.