Which statement is correct for leukocytes?
A) They are responsible for the body's various immune defence strategies.
B) They spend most of their time circulating in the blood.
C) They are all produced in the lymph nodes.
D) They are responsible for the body's various immune defence strategies and spend most of their time circulating in the blood.

Question

Quizplus · Accepted Answer

Leukocytes, or white blood cells, are primarily responsible for the body's immune defense strategies. They do not spend most of their time circulating in the blood; instead, they often migrate to tissues where they are needed. They are produced in the bone marrow, not just in the lymph nodes.

Which Statement Is Correct for Leukocytes