Question

1. List the functions of the following cell types:

Neutrophils

Monocytes

Macrophages (3 major functions)

Eosinophils (2 functions)

Basophils and mast cells

Conventional dendritic cells

Follicular dendritic cells

B lymphocytes

Helper T cells

Treg cells

Cytotoxic T cells

NK cells

Answer 1

Functions are as follows for respective cell types

Neutrophils:- they are important part of innate immune system as they are first type of cells to reach to any site of infection and react to stop spread of infection.

They are also phagocytic in nature.

Monocytes :- largest type of wbc's in body.react against bacteria,germs, microbial infections.

Macrophages:- mainly phagocytic in nature

Engoulf the bacteria,microbes,fungi that enter body and destroy them.

Help in destruction of old worn out cells of body

Play key role in inflamatory response.

Eosinophils :- they also respond to inflamatory reactions.

Parasitic in nature. ( Kills germs and infectious agents)

Basophils and mast cells:- they are also anti-inflammatory in response perticularly react to allergns.

They also play crucial role in blood clotting at time of injury as well as maintain uniform blood flow through the body.

Conventional dendritic cells :- act as messenger between innate and adaptive immunity.

Stimulate T- cells by secreting IL-6, IL-12 and chemokines.

Follicular dendritic cells :- they help in producing potent antigens to memory B- cells so that they can further react against the specific antigen.

B lymphocytes:- secrete cytokines by presenting antigens

Helper T cells:- trigger activity of other inmune cells by secreting cytokines.

Treg cells:- prevent auto immune diseases by preventing self antigens

Cytotoxic t cells :- attack and kill infected cells, foreign bodies

Nk cells:- perform function of killing the tumor inducing cells in absence of antibodies, they also can adapt in the form of memory nk cells For faster immune response