Question

Which of the following is true of leukocytes? A. They are very similar in appearance and function as red blood cells. B. Leukocytes are smaller than and more numerous than red blood cells. C. Like red blood cells, mature leukocytes also lack a nucleus and other intracellular organelles. D. Leukocytes always remain in circulation throughout the body. E. The leukocyte is a major component of the body’s defenses against di

Answer 1

E. Leukocytes are major component of body defense against disease

• Leukocyte or white blood cells are involved with immunity and prevention of infection, whereas RBC are associated with transport of oxygen
• A normal human have around 10,000 WBC and RBCs number runs in million (5 million per micro liter)
• Leukocytes have nucleus, some like neutrophils have multiplied nucleus
• They are present in circulation, but also present in lymph node, tissues etc