Question

Which of the following form(s) the first line of defence of the body against pathogens?

• A. Skin
• B. Tears
• C. Mucus
• D. All of these

Answer 1

Answer: (A), (B), (C)

The correct options are
A

Skin

B

Tears

C

Mucus

Skin, tears and mucus form the first line of defence of the body against microbial invasion. These are called so because they are the first barriers which the pathogens encounter when they enter a body during an infection.