Where are histamine-releasing mast cells located?
a. Circulating in the blood
b. Circulating in the lymph
c. Attached to organ tissue
d. Embedded in the bone marrow
C
Mast cells are located in organ tissue when they release their histamine. The organ to which they are attached is the host of the inflammatory response. If the organ is the lung, the response may be asthma; if the organ is the colon, the response may be diarrhea.
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