A 34-year-old man presents with a 5-day history of a painful sore on his hand. Physical examination reveals a 0.5-cm abscess on the extensor surface of the left hand that drains a thick, purulent material. Diapedesis of leukocytes into and around this patient's infected wound occurs primarily at which of the following anatomic locations?
One of the earliest responses following tissue injury occurs within the microvasculature at the level of the capillary and postcapillary venule.
Lymphatic capillaries
Postcapillary venules
Precapillary aerioles
Small dermal aeries
Inflammation