Second Line of Defense

Question 1

Is the second line a specific defense?

Answer 1

No, it is a non specific defense that will stay the same for all pathogens

Question 2

Phagocytosis

Answer 2

nonspecific WBC’s engulf and break down any type of pathogen

Question 3

Inflammatory response

Answer 3

-first response to tissue damage or infection
-body senses danger = histamine release = alert defenses
-blood vessels in the area dilate to increase temp and pressure

Question 4

Complement proteins

Answer 4

-20 proteins that locate invading pathogens and attract phagocytes to kill pathogen through lysis

Question 5

Natural killer cells

Answer 5

can kill infected or abnormal body cells without waiting for anyone else
-they are WBC’s that develop in lymph

Question 6

Interferons

Answer 6

-releases by cells that have been invaded by viruses
-encourage other cells to put up defenses