Host Defences

Question 1

Disease Definition

Answer 1

Result of a host infection with a pathogen

Question 2

Constitutive defences

Answer 2

1. anatomical defences - skin, mucous membrane
2. microbial antagonism
3. phagocytosis
4. issue bactericides - complement

Question 3

M Cells

Answer 3

Specialised epithelial cells

Question 4

Neutropenia

Answer 4

depressed PMN levels - prone to infection

Question 5

Classical Pathway

Answer 5

complement cascade is triggered by ab recognition in the blood.

Question 6

C3a and C5a function

Answer 6

attract and activate macrophages

Question 7

Alternative Pathway

Answer 7

When complement cascade is not triggered by the presence of an ab. Occurs when a new bacteria is encountered.