Which of the following is important to the first line of defense provided by the immune system?

Question

Quizplus · Accepted Answer

The first line of defense provided by the immune system includes physical, mechanical, and chemical barriers, such as unbroken skin, mucous membranes, and secretions like tears and saliva. These barriers prevent harmful microorganisms from entering the body and causing infection. Inflammation and fever, forming antibodies, and activation of protective proteins are all parts of the second line of defense, which is activated when harmful microorganisms manage to bypass the first line.

Which of the Following Is Important to the First Line