Immune system

Question 1

Interferons

Answer 1

Proteins that prevent viral replication and dispersion. Cause nearby cells to decrease production of viral and cellular proteins.

Responsible for “flu like symptoms” during a viral infection

Question 2

What is an MHC molecule

Answer 2

Major histocompatibility complex. Binds to pathogenic peptide (antigen) and carries it to cell surface where it can be recognized by the cells of the adaptive immune system

Question 3

MHC class I

Answer 3

Nucleated cells in the body

Endogenous pathway because it binds antigens that come from inside the cell

Question 4

MHC Class II

Answer 4

Mainly displayed by professional antigen presenting cells like macrophages.

Called exogenous pathway because the antigens originated outside the cell

Question 5

Neutrophils

Answer 5

Most populous leukocyte in blood. Very short lived.

Phagocytic and target bacteria.

Question 6

Dead ______ collections are responsible for the formation of pus during an infection

Answer 6

Neutrophil

Question 7

Eosinophils

Answer 7

Involved in allergic reactions and invasive parasitic infections

Release large amounts of histamine when activated

Question 8

Histamine

Answer 8

Inflammatory mediator

Causes vasodilation and increases leakiness of blood vessels, allow additional immune cells to move out of the blood stream and into the tissue

Question 9

Basophils

Answer 9

Involved in allergic response. Least populous leukocyte