× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
New Topic  
Sauce1387 Sauce1387
wrote...
Posts: 718
Rep: 0 0
6 years ago
Outline the three levels of defense of humans against the invasion of pathogens.
 
  What will be an ideal response?
Read 19 times
1 Reply

Related Topics

Replies
wrote...
#1
6 years ago
In the course of an average day, we encounter pathogens (disease-causing agents) of many kinds: viruses, bacteria, fungi, and parasites. Fortunately, we possess several levels of defense against infection by pathogens. Each level brings an increasingly aggressive response. Humans have three levels of defense: (1) the skin and the organisms that inhabit it, (2) the innate immune system that uses nonspecific responses such as inflammation, and (3) the adaptive immune system, which mounts specific responses to infection.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1283 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 144
  
 348
  
 213
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?