Third Line of Defense

Question 1

Is the third line a specific defense?

Answer 1

Yes

Question 2

Antigens

Answer 2

any molecule that body defines as foreign

Question 3

Lymphatic System

Answer 3

group of organs and tissues (lymph, spleen) that stores cells to fight infections

Question 4

B-cell

Answer 4

fights infections by forming antibodies
-triggered and activated by helper t-cells
-engulf pathogen and display antigen on cell body

Question 5

T- cells

Answer 5

fights infections by destroying cells that have been infected

Question 6

B-cells and the spleen

Answer 6

use spleen as a staging area to make plasma cells and antibodies

Question 7

T-cells and the spleen

Answer 7

use white pulp of the spleen as a place to multiply before attacked nonself cells

Question 8

Lymph nodes

Answer 8

acts as a filter to catch any bacteria or pathogen

Question 9

Humoral Immune response

Answer 9

-takes place in blood and lymph
-combats pathogens directly using b-cells
-helper t-cell binds to antigens and b-cell turns into plasma cell
-plasma cell release antibodies and they mark pathogens for phagocytosis

Question 10

Cell Mediated Response

Answer 10

-destroys body cells infected

Question 11

Cytotoxic t-cells

Answer 11

release toxins when encountering a virus infected cell

Question 12

Regulatory t-cells

Answer 12

end immune response to prevent t-cells from attacking own antigens

Question 13

Active Immunity

Answer 13

results from memory cells being produced after fighting a pathogen

Question 14

Passive Immunity

Answer 14

occurs when antibodies are transferred to an individual who has never been exposed to the pathogen
-ex. mother to child when child is fetus