Final answer:
The five types of leukocytes listed from most to least abundant are neutrophils, lymphocytes, monocytes, eosinophils, and basophils. Neutrophils are the most common, forming up to 70% of leukocytes.
Step-by-step explanation:
The five types of leukocytes in the human body are ranked by their abundance in the blood, with some being more common than others. The most abundant leukocyte is the neutrophil, which typically comprises 50-70% of the total white blood cell count. Following neutrophils, the lymphocytes are the next most common, and they play a crucial role in the adaptive immune system. The third in line are monocytes, which when they leave the bloodstream and enter tissues, mature into macrophages. The fourth and fifth are the granular leukocytes, eosinophils and basophils, known for their role in allergic responses and parasitic infections. Therefore, the list from most to least abundant is: neutrophils, lymphocytes, monocytes, eosinophils, and basophils.