What are the components of acute inflammation?

There are three components of acute inflammation:

1. Dilation of small vessels leading to an increase in blood flow, 
2. Increased permeability of the microvasculature enabling plasma proteins and leukocytes to leave the circulation.
3. Emigration of the leukocytes from the microcirculation, their accumulation in the focus of injury, and their activation to eliminate the offending agent