During a lecture on inflammation, the physiology instructor discusses the major cellular components involved in the inflammation response. The instructor asks, "Which of the following cells arrives early in great numbers?"
The student with the correct response is:
A) Basophils
B) Lymphocytes
C) Neutrophils
D) Monocytes
Ans: C
Feedback:
Neutrophils are the primary early arrival cells and are signified by an elevated neutrophil count that includes mature (PMNs) and immature (bands) cell forms. Basophils respond later. Lymphocytes have a slower arrival and stay longer. The half-life of circulating monocytes is about a day, after which they begin to migrate to the site of injury and mature into larger macrophages, which have a longer half-life and greater phagocytic ability than do blood monocytes.
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