Week 5 Immune System

Question 1

Name some resons why we need an immune system?

Answer 1

Constant exposure to bacteria, viruses, spores, etc.
Cancers - Identifies cancerous cells, abnormal cells.
Auto-immune disease/allegies (inappropriate activation of the immune system - arthritis, hayfever, lupus)
Immunosuppression - Transplantation therapy
HIV/AIDS

Question 2

What is the first line of defence of the outside of our bodies?

Answer 2

Skin

Question 3

How many arms of the immune system are there and what are they called?

Answer 3

2, innate and adaptive

Question 4

Are innate defenses specific or non specific?

Answer 4

Non-specific

Question 5

What are some examples of the first line defences of our innate immune system?

Answer 5

Skin, mucus membrane, skin, cilia, saliva, acidity enzymes

Question 6

What are some examples of the second line of defence for innate defenses?

Answer 6

phagocytes, NK cells, inflammatory responses ie fever, macrophages WBC’s and chemicals

Question 7

Are adaptive defenses specific or non specific?

Answer 7

Specific

Question 8

What are the two types of immunity associated with adaptive defenses?

Answer 8

Humoral and cellular