Immune System Test

Question 1

What are the 3 lines of defense?

Answer 1

-Physical and Chemical Barriers (Innate Immunity)
-Nonspecific Resistance (Innate Immunity)
-Specific Resistance (Acquired Immunity)

Question 2

What are physical barriers?

Answer 2

First line of defense,
the skin, mucous membrane, hair, cilia, urine, defecation and vomiting

Question 3

What are chemical barriers?

Answer 3

First line of defense, lysozyme an enzyme in tears, gastric juice, saliva, acidity, sebum, hyaluronic acid

Question 4

What is nonspecific resistance?

Answer 4

Second line of defense, destroys invaders using
-phagocytic cells
-inflammation
-fever

Question 5

What are phagocytic cells?

Answer 5

Phagocytic cells ingest and destroy all microbes that pass into body tissue

Question 6

What is an example of a phagocytic cell?

Answer 6

an example is a macrophages, they injest the pathogen, use what they can, take a marker and present it to interleukin-1 which gives it to the t-cells