Immune system

Question 1

What are mast cells?

Answer 1

Cells that secrete histamine as a response to damaged tissue

Question 2

What responses does histamine stimulate?

Answer 2

Increased blood flow in capillaries

Question 3

What are cytokines?

Answer 3

Proteins that act as chemical messangers to signal immune cells to fight pathogens.

Question 4

What stage of phagocytosis is this?
Bacteriumm is ingested forming phagosome

Answer 4

First stage of phagocytosis

Question 5

What stage of phagocytosis is this?
Phagosome fuses with lysosome

Answer 5

Second stage

Question 6

What stage of phagocytosis is this?
Lysosomal enzymes digest captured material

Answer 6

Third stage

Question 7

What stage of phagocytosis is this?
Digested products are released from the cell

Answer 7

Fourth stage

Question 8

What stage of phagocytosis is this?
Phagosome fuses with lysosome

Answer 8

Second stage

Question 9

What stage of phagocytosis is this?
Digested products are released from the cell

Answer 9

Fourth stage

Question 10

What stage of phagocytosis is this?
Bacteriumm is ingested forming phagosome

Answer 10

First stage

Question 11

What do t-helper cells do?

Answer 11

They help the immune system by stimulating the activity of other cells

Question 12

What do t-helper cells have?

Answer 12

Recepters that are complimentory to a specific antigen

Question 13

What do killer t-cells do?

Answer 13

They kill certain cells such as: cancer cells, foreign cells, cells infected with a virus