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LuckyWell [14K]
3 years ago
13

As you walk down the hall on the way to class, several students sneeze. You unknowingly inhale some of the droplets

Biology
1 answer:
erica [24]3 years ago
6 0

Answer:

The innate or nonspecific immune system includes two lines of defense in the human body. Non-specific means that it does not act on the specific pathogen. It works equally to keep all types of pathogens such as bacteria, viruses, parasites et cetera out of the body. The first line of defense includes physical barrier which prevents the entry of pathogens into the body. It includes skin, respiratory tract, gastrointestinal tract, cilia, nasopharynx, eyelashes, and body hairs. 

The second line of defense includes anti-inflammatory responses, fever, and nonspecific cellular responses such as phagocytes, macrophages, complement system et cetera. Thus, the virus has to pass physical, chemical, and nonspecific cellular responses of the body in order to infect the body. 

Explanation: I found this answer on a different site and it was right, no need to thanks me, no problem

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