Question
What is the purpose of mucus in human defence systems? slowing down bacteria reproduction closing up wounds moisturising fissues trapping pathogens giving a person a unique smell
Answer
4
(231 Votes)
Kimberley
Veteran · Tutor for 12 years
Answer
trapping pathogens
Explanation
Mucus serves as a protective layer in our body, particularly in the respiratory and digestive systems. One primary chemical defense invertebrates (including humans) employ against pathogens is mucus secreted from their mucous membranes. This mucus entraps smaller particles, including bacteria and dust performing crucial roles in the immune system. While some options like 'slowing down bacteria reproduction' and 'moisturising tissues' may sound plausible, the one that best captures the main function of mucus in relation to the immune system is 'trapping pathogens'.