BIOL 151 Fall 2018 Unit 1 Week 4 Assignment AaBb membranes prevent most pathogen

Question

BIOL 151 Fall 2018 Unit 1 Week 4 Assignment AaBb membranes prevent most pathogens trom entering the body because or sticky and the presence of chemicals called skin, tears, and other body secretions. If the first lines of defense should fail, the immune response acts nonspecifically against pathogens. This response includes formation of which are also found in the pus made of dead tissue debris, and bacteria from the damaged tissuc. Complement is another chemical produced as a second line of defense. The process (complement fixation) may be rctivated through three different pathways: , phagocytic , and The end results of somplement activation may be enhanced

Explanation / Answer

mucus

,lysozymes

,the second line of defense such as phagocytic leukocytes

,microorganisms ,

phagocytic leucocytes

classical complement pathway,alternative complement pathway,lectin pathway

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