5.1 defence mechanisms Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

what are the 2 types of white blood cells?

A
  • B cells

- T cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what can the immune system identify?

A
  • pathogens
  • cells from other organisms of the same species
  • abnormal body cells
  • toxins
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

how can the immune system identify non- self?

A

non- self have specific molecules on its surface to identify it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are T cells involved in?

A

cell- mediated immunity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are B cells involved in?

A

humoral immunity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are non- self material?

A

cells from other organisms of the same species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

how do lymphocytes recognise cells belonging to the body in the fetus?

A
  • lymphocytes that fit those of the body’s own cells die (apoptosis) or are suppressed
  • only non- self complementary lymphocytes are left
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

how do lymphocytes recognise cells belonging to the body in adults?

A
  • lymphocytes produced in the bone marrow only encounter self- antigens and undergo apoptosis
  • only non- self complementary lymphocytes are left
  • no clones of these anti-self lymphocytes will appear in the blood
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is a non- specific response?

A

response is immediate and the same for all pathogens

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is a specific response?

A

response is slower and specific to each pathogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly