Phagocytosis Flashcards
1
Q
What are phagocytes?
A
- They are specialised white blood cells that engulf and destroy pathogens
2
Q
What are the two types of white blood cells?
A
- Neutrophills
- Macrophages
3
Q
What are neutrophills?
A
- They engulf and digest the entire pathogen
4
Q
What are macrophages?
A
- engulf and digest the pathogen except for its antigens
5
Q
NEUTROPHILL - How is glycogen adapted for its function?
A
- provides source of glucose
6
Q
NEUTROPHILL - How is a mutli-lobed nucleus adapted for its function?
A
- helps neutrophill pass in small gaps
7
Q
NEUTROPHILL - How is mitochondria adapted for its function?
A
- provides ATP
8
Q
NEUTROPHILL - How are phagosomes adapted for its function?
A
- where killing and digestion of engulfed particles take place
9
Q
What does engulf mean?
A
- To enclose or cover something completely.
10
Q
What does phagosome mean?
A
- The vesicles in which a pathogen or damaged cell is engulfed by a phagocyte
11
Q
What is an lysosome?
A
- It contains the hydrolytic enzymes for the breakdown of waste materials
12
Q
What is phagolysosome?
A
- When a phagosome combines with lysosome
13
Q
What is exocytosis?
A
the bulk transport of materials out of the cell
14
Q
How does phagocytosis work?
A
- Microbes adhere to phagocyte
- Phagocyte engulfs the particle
- Phagocytic vesicle (contains antigen) is fused with lysosome
-microbes is fused with vesicle is killed and digested by lsysomal enzymes within the phagolysosome - indigestible and residual material is removed by exocytosis.
