This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
First sign of wound injury is 
Select and explain. 
A. Epithelization, B. Dilatation of capillary, C. Leukocyte infiltration, D. Locatised odema
B: Dilatation of capillary
Answer: B: Dilatation of capillary 
Explanation: ref Robbins 8/e p46 ,102 ; 7/e p107,9/e p106 Some redness is normal at the wound site, but it should diminish over time. However, if your surgical incision or wound continues to be red or exhibit radiating streaks known as lymphangitis, this is a warning sign of awound infection .red Ness due to vasodilation