Defence mechanisms

Question 1

what is an infection

Answer 1

an interaction between the pathogen ans the body’s various defence systems

Question 2

what will happen next time if body is able to fight pathogen

Answer 2

the body’s system is better prepare if infected again by the same pahogen and can kil it before it causes harm

Question 3

what are the genral and immediate defences

Answer 3

skin formation and phagocyctosis

Question 4

what is the specific immune system response

Answer 4

use of white blood cells lymphocyte cell mediated response and humoral response

Question 5

what can the body cells recognise as foreign

Answer 5

toxins including those produced from pathogens causing cholera
foriegn transplanted tissue
pathogens
abnormal body cells like cancer cells

Question 6

how do lymphocyte recognise bodies own cells

Answer 6

in the featus the lymphocytes are always colliding with other cells the infection in featus is rare because it is protected from the outside bby mother and placenta
lymphocytes will then exclusively only collide with own cells and have receptors that fit body cells these lymphocytes will either die or supress
the only lymphocytes will be those that fit foreign material