IAH

Question 1

2. role of the immune system

Answer 1

1. recognise non-self microbes and viruses
2. effector function - contain/irradicate pathogen
3. regulation to prevent inappropriate responses e.g. hypersensitivity or chronic inflammation
4. memory - immediate and stronger response on second exposure.

Question 2

2. what is innate immunity?

Answer 2

• all multicellular organisms have this.
• rapid response
• limited no. of specificities
• fixed response (intensity/rate is always similar)
• constant during response
• activates adaptive immunity

Question 3

2. effector mechanisms of innate immunity and signs and symptoms

Answer 3

• physical, chemical and microbial barriers
• phagocytosis
  //
• none: natural homeostatic function

Question 4

2. what is adaptive immunity

Answer 4

• slow (days to weeks) - several cell to cell interactions
• variable response due to antigen specificity
• numerous highly selective specificities
• improve during diagnosis
• antigen specific

Question 5

2. effector mechanism of adaptive immunity and signs and symptoms

Answer 5

• antibodies
• cell mediated immunity
• memory
  //
• longstanding, effective protection

Question 6

2. what are cytokines

Answer 6

• induce chemotaxis and interferon response