Innate and adaptive immunity Flashcards
Defensins are natural antibiotics produced by epithelia. True or false?
True
What is the advantage of increased vascular permeability promoted by inflammatory mediators?
It allows increased migration of macrophages, neutrophils and lymphocytes into tissue
Which type of innate immune system cell is involves in the anti parasite and allergy response?
Eosinophil
Basophil’s are involved in the protection of mucosal surfaces. True or false?
True
Are macrophages a part of the innate or adaptive immune response?
Innate
What is the role of T helper cells?
To activate B lymphocytes
What is the role of cytotoxic T lymphocytes?
To kill virus infected cells
Which lymphocyte: T or B? Has a cell antigen receptor is a membrane-bound antibody surface immunoglobin.
B lymphocyte
What are the three main ways in which antibodies protect the host from infection?
- Neutralization
- Oponisation
- Complement activation
What is clonal selection?
It is the process where by the clonal frequency of cells with a particular antigen specificity is raised
What are plasma cells?
Cells derived from B lymphocytes that produce antibodies
What is complement activation?
It is where the antibody activates a complement, which enhances oponization and lyses some bacteria
Pus is an accumulation of dead neutrophils. True or false?
True
What is oponization?
It is the coating of a microorganism by antibodies or complement to render it recognisable as foreign by phagocytes, thus enhancing phagocytosis.
How do natural killer cells directly induce apoptosis in virus-infected cells?
By pumping proteases through pores
