A patient has presented to the emergency department after suffering a severe laceration to his hand in a workplace accident. During the subsequent process of acute inflammation, what physiological event took place first?
A) The patient's B cells produced antibodies.
B) The patient's blood vessels constricted.
C) Neutrophils migrated to the injury site.
D) Opsonization occurred.
B
Feedback:
The process of acute inflammation occurs in three stages. The first stage is the vascular stage; notable changes occur in the small blood vessels at the site of the cellular and tissue injury. At the time of the injury, vasoconstriction results, followed by vasodilation of the capillaries and venules to increase capillary blood flow, increasing temperature and redness at the site. Opsonization, neutrophil migration, and antibody production take place in later stages of inflammation.
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