Immunity

Urine and tears are examples of _____ line of innate defenses.

first

Complement proteins attract phagocytes to a pathogen by _____.

chemotaxis

When you are exposed to disease by coming into contact with someone else who has the disease ______ occurs.

naturally acquired active immunity

Your body has two types of immune responses that can defend against disease and include

innate immunity and adaptive immunity

____ interfere with viral replication and diffuse from one cell to another rending the receiving cells resistant to invading virus.

interferon

Which of the following statements is NOT true?

monocytes enlarge to become macrophages which always remain fixed in their locations

Which of the following is NOT part of the second line of innate immunity?

antigen-presenting cells

____ from blood become activated and poke holes in microbial membranes causing them to undergo cytolysis.

compliment proteins

The intial response to HIV infection is a modest decline in the number of circulating

helper T cells

Which class of immunoglobulins make up 80% of the antibodies in the blood and the only class to cross the placenta from mother to fetus providing considerable immune protection to newborns?

IgG

A sever, life-threatening allergic reaction in which the airways constrict so much that the person has extreme difficulty breathing is called

anaphylactic shock

If microbes are released after an infected cell is killed

phagocytes kill the released microbes

An _____ is an antigen that evokes an hypersensitivity reaction

allergen

______ is directed against extracellular pathogens.

antibody-mediated immunity

Which of the following cells kill infected host cells by releasing granzymes that induce apoptosis?

cytotoxic T cells

____ are short peptides that kill microbes and attract other cells that participate in immune responses.

antimicrobial proteins

All of the ollowing are components o the second line of innate defense EXCEPT

sebum

Which of the following statements is TRUE concerning the first line of innate immunity?

urine washes microbes from urethra

A/an _____ is any substance that has the ability to provoke an immune response.

antigen

Which of the following is NOT true concerning the HIV virus?

if left untreated, people with HIV infections begin showing symptoms of AIDS within 10 to 12 months after initial exposure

Which o the following cells are capable of producing antibodies?

B lymphocytes

A cell infected by a virus will produce _____ that signal neighboring cells to produce this protein which interferes with viral replication.

interferons

______ is a unique (to each human unless you are an identical twin) set of proteins which help T cells and B cells distinguish your body's own cells and antigens from foreign cells and antigens.

major histocompatibility complex

Urine and tears are examples of _____ line of innate defenses.

first

Complement proteins attract phagocytes to a pathogen by _____.

chemotaxis

When you are exposed to disease by coming into contact with someone else who has the disease ______ occurs.

naturally acquired active immunity

Your body has two types of immune responses that can defend against disease and include

innate immunity and adaptive immunity

____ interfere with viral replication and diffuse from one cell to another rending the receiving cells resistant to invading virus.

interferon

Which of the following statements is NOT true?

monocytes enlarge to become macrophages which always remain fixed in their locations

Which of the following is NOT part of the second line of innate immunity?

antigen-presenting cells

____ from blood become activated and poke holes in microbial membranes causing them to undergo cytolysis.

compliment proteins

The intial response to HIV infection is a modest decline in the number of circulating

helper T cells

Which class of immunoglobulins make up 80% of the antibodies in the blood and the only class to cross the placenta from mother to fetus providing considerable immune protection to newborns?

IgG

A sever, life-threatening allergic reaction in which the airways constrict so much that the person has extreme difficulty breathing is called

anaphylactic shock

If microbes are released after an infected cell is killed

phagocytes kill the released microbes

An _____ is an antigen that evokes an hypersensitivity reaction

allergen

______ is directed against extracellular pathogens.

antibody-mediated immunity

Which of the following cells kill infected host cells by releasing granzymes that induce apoptosis?

cytotoxic T cells

____ are short peptides that kill microbes and attract other cells that participate in immune responses.

antimicrobial proteins

All of the ollowing are components o the second line of innate defense EXCEPT

sebum

Which of the following statements is TRUE concerning the first line of innate immunity?

urine washes microbes from urethra

A/an _____ is any substance that has the ability to provoke an immune response.

antigen

Which of the following is NOT true concerning the HIV virus?

if left untreated, people with HIV infections begin showing symptoms of AIDS within 10 to 12 months after initial exposure

Which o the following cells are capable of producing antibodies?

B lymphocytes

A cell infected by a virus will produce _____ that signal neighboring cells to produce this protein which interferes with viral replication.

interferons

______ is a unique (to each human unless you are an identical twin) set of proteins which help T cells and B cells distinguish your body's own cells and antigens from foreign cells and antigens.

major histocompatibility complex