5.4 B lymphocytes and humoral immunity Flashcards
1
Q
where do b lymphocytes mature?
A
bone marrow
2
Q
what immunity do b lymphocytes produce?
A
humoral immunity
3
Q
what does humoral immunity involve?
A
- antibodies = released into plasma
4
Q
what does the b cell have on its surface?
A
antibodies that can bind to only one specific antigen
5
Q
what happens to the antigen during humoral immunity at the beginning?
A
it enters the B cell
6
Q
what happens to the B cell after the antigen enters it?
A
- becomes an antigen-presenting cell
- displays bacterial antigen on its cell membrane
7
Q
what happens after the b cell becomes into an antigen presenting cell?
A
- specific TH cell detects antigen and stimulates b cell
8
Q
what happens after the TH cell stimulates the B cell?
A
- B cell divides by mitosis = forms clones of identical B cells, plasma cells
- plasma cells secretes specific antibody
= can bind to the antigen on the pathogen - some turn into memory cells
9
Q
what do plasma cells secrete?
A
monoclonal antibodies
