Lab 3 - Immune System - 3

Question 1

• What are Dendritic Cells?

Answer 1

In tissues contacting environment, stimulate adaptive immunity against pathogens

Question 2

• What are Eosinophils?

Answer 2

In tissues under epithelium, which defend against multicellular invaders (worms) by discharging enzymes

Question 3

• What are Natural killer cells?

Answer 3

Circulate body, detect abnormal surface proteins characteristic of some virus-infected/cancerous cells – especially they recognize what a normal cell should look like

Question 4

• What is one important thing about Natural Killer Cells?

Answer 4

They don’t engulf but only release chemicals

Question 5

• Within the innate Immunity for Vertebrates, what is the complement system?

Answer 5

inactive proteins in blood plasma; activated by substances on surface pathogens leading to many biochemical reactions causing lysis cells

Question 6

• What is lysis?

Answer 6

disintegration of a cell wall or cell membrane.

Question 7

• What is the membrane of a cell?

Answer 7

the entrance/exit of a cell - transportation as well.

Question 8

• What are the two protective proteins in the immune system that act in a NON-SPECIFIC way?

Answer 8

Interferons and the Complement System.

Question 9

• Events triggered by injury-infection is called what?

Answer 9

Inflammatory response – like as in a splinter, or a cut

Question 10

• What are Cytokines?

Answer 10

Signaling molecules recruit neutrophils to site of injury-infection

Question 11

• What are Mast cells?

Answer 11

Immune cells in connective tissue release signaling molecule histamine