Which of these does NOT provide a physical or chemical barrier?
A) macrophages
B) saliva
C) urine
D) mucus
E) stratified squamous epithelium

Name: Which of these does NOT provide a physical or chemical barrier? A) macrophages B) saliva C) urine D) mucus E) stratified squamous epithelium
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Question

Quizplus · Accepted Answer

Macrophages are immune cells that engulf and digest pathogens, but they do not act as a physical or chemical barrier. The other options provide barriers to prevent pathogen entry.

Which of These Does NOT Provide a Physical or Chemical