Question

37 multiple choice 10 points
which of the following is/are not a physical barrier against infection?
bile
cilia
nasal mucous membranes
ear canal hairs

38 multiple choice 10 points
the acute inflammatory response is part of which immune system?
acquired
innate
chemical
barrier

39 multiple choice 10 points
tapeworms belong to which category of pathogens?
helminth
protozoan
fungi
ectoparasite

Explanation:

Question 37

Physical barriers against infection include structures like cilia (traps pathogens), nasal mucous membranes (blocks entry), ear canal hairs (trap particles). Bile is a digestive fluid, not a physical barrier.

The innate immune system includes non - specific defenses like the acute inflammatory response. The acquired immune system is specific, chemical and barrier are not types of immune systems in this context.

Tapeworms are helminths (parasitic worms). Protozoans are single - celled, fungi are different organisms, and ectoparasites live on the surface, while tapeworms are endoparasitic helminths.

Answer:

A. bile

Question 38