6B

Question 1

Antigen

Answer 1

• Located on surface of cells
• Immune system is able to recognize specific pathogens due to presence of antigens on their cell surface and stimulate immune response in the body

Question 2

Non-specific response

Answer 2

Response to pathogen infections involving use of several WBC and plasma proteins

Question 3

Specific response

Answer 3

Specific glycoproteins (antigen) recognized by leukocytes

Question 4

Non-specific response

Answer 4

1) Inflammation
2) Fever
3) Phagocytosis
4) Lysozyme action
5) Interferons

Question 5

Inflammation

Answer 5

= area of wound become swollen, warm, painful, redness
- Body cells (mast cells) respond to tissue damage by secreting molecules ; histamine

Question 6

Histamine stimulates

Answer 6

1) Vasodilation
- Widening of diameter of arteries due to relaxation of smooth muscle in blood vessel walls
- Increase blood flow through capillaries

2) Capillary wallls
- Become Leakey / more permeable ; allow fluid to enter tissues and create swelling
- Some plasma containing leukocytes / antibodies forced out of capillaries

3) Phagocytes leave blood / enter tissue to engulf foreign particles

4) Release cytokines