A Difficult Wound for the Immune System to Respond to is

Question

A difficult wound for the immune system to respond to is a
A)bruise because blood vessels lose too much blood.
B)puncture wound because the first and second lines of defense can be bypassed.
C)burn because the acidity of skin is compromised.
D)cut or tear because salty secretions on sweat glands cause infection.

Accepted Answer

A puncture wound is the most difficult wound for the immune system to respond to because it bypasses the first and second lines of defense (physical and chemical barriers) and allows microbes to directly enter the body, making it harder to prevent infection.