Phagocytosis Flashcards

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

what type of response is phagocytosis and why?

A
  • non specific
  • same response for all pathogens
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

briefly describe phagocytosis

A

phagocytes (macrophages and neutrophils) travel in the blood and squeeze out of capillaries to engulf and digest pathogens

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

stage 1 (cytokines)

A

damaged cells and pathogens release cytokines which attract phagocytes to the site of infection

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

what are cytokines?

A

cell signalling chemicals

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

stage 2 (opsonins)

A

opsonin proteins attach to pathogens to mark them which makes it easier for pathogens to engulf them

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

stage 3 (receptors)

A

phagocyte receptors attach to chemicals on pathogen surface

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

stage 4 (engulf)

A

phagocyte engulfs pathogen into a vesicle, forming a phagosome

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

stage 5 (lysosome)

A

lysosomes containing lysozyme fuse with phagosome and hydrolyse the pathogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

stage 6 (absorb)

A

phagocyte cytoplasm absorbs any useful soluble molecules

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

stage 7 (APC)

A

phagocytes present pathogen antigens on the surface, becoming an antigen presenting cell

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