immunity

Which of the following does not belong to the sending line of defense

The gastric juices

____ lacks the capacity to remember a pathogen or react differently to it in the future whereas _____ utilizes memory cells to adapt to a given pathogen and ward it off more easily in the future

Non specific resistance, adaptive immunity

____ are found especially in the mucous membrane standing guard against parasites and allergens

Esinophils

Complement fixation can it lead to

Endogenouspyrexia

____ are secreted by cells infected with viruses alerting neighboring cells and protecting them from becoming infected

Interferons

When an enemy cell is present a ____ secret performs which bore a hole in the enemy cell membrane

Natural killer cell

A pyrogen is a substance that causes

Fever

____ is not a cardinal sign characteristic of inflammation

Fever

One group of proteolytic enzymes secreted by natural killer cells is

Granzymes

One characteristic of the immune response is specificity this means that

Immunity is directed against a particular pathogen

Vaccination stimulates ___ immunity

Artificial active

A ___ is the region of the molecule that is recognized by antibodies

Epitope

T cells achieve immunocompetence in the

Thymus

Helper T cells recognize antigens when they are bound to a

Major histo compatibility complex (MCH) protein

____ participate in both non specific resistance and immune response

Helper T cells

Cytotoxic T cells are like natural killer cells because they both

Secrete granzymes and perforin

Which of the following is something antibodies do not do

Differentiate into memory antibodies which upon re exposure to the same pathogen sound amount a quicker attack

Which is the correct sequence of events in the humoral immune response

Antirecognition, antigen presentation, Clonal selection, differentiation, attack

_____ constitutes about 80% of circulating antibodies in plasma

IgG

Which class of immuniglobulin provides passive immunity to the newborn during breastfeeding

Ima

Before B cells secrete antibodies they differentiate into

Plasma cells