Which of the following makes the body vulnerable to pathogens?

Question

Quizplus · Accepted Answer

Breaks in the skin or mucous membranes can provide an entry point for pathogens to invade the body. Enzymes in body secretions (A) such as lysozyme in tears and saliva can help to kill or inhibit pathogens. Secretions produced by mucous membranes (C) such as mucus and saliva can also trap and inhibit the spread of pathogens. Cilia in the respiratory tract (D) help to sweep mucus and trapped pathogens out of the airways.

Which of the Following Makes the Body Vulnerable to Pathogens