Quiz 3

Inflammation can be caused by the release of ______ from basophils which results in ________.

histamine; an increase in capillary permeability.

Interferons ___________.

interfere with viral replication within cells

What are considered the effectors of humoral immunity?

Antibodies

________ serve as antigen presenting cells and _______.

Both B and C are correct. Macrophages; exhibit class II MHC glycoproteins and Langerhans cells; display exogenous antigens

Fevers are beneficial to the "infection fighting" process because they ________.

Decrease replication of bacteria

Which of the following lists the bodys first, second, and third lines of defense in order?

External innate immunity, internal innate immunity, adaptive immunity

A membrane attack complex (MAC) is a protein grouping that ____________.

Forms a channel/hole in the target cell membrane that causes cytolysis

Which of the following would NOT be considered an antigen?

Glucose

Of the five classes of antibodies, ___________ has the capacity to fix complement and may also be attached to the surface of B-cells.

IgM

Upon exposure to bacteria, macrophages can secrete pyrogens, which ________.

Increases the body's "set point" temperature

Which is NOT one of the cardinal signs of inflammation?

Numbness

Complement proteins and antibodies coat a mircoorganism and provide binding sites, enabling macrophages and neutrophils to phagocytize the organism. This phenomenon is termed ________.

Opsonization

The process by which neutrophils are attracted to an injury site is _______.

chemotaxis

Exudate is ________.

fluid that leaves capillaries to "wash" the interstitial space of an injured tissue

Helper T cells recognize antigen fragments that are ____________.

presented in MHC II glycoproteins of APC's

The redness and heat of an inflamed are are due _______.

vasodilation