Immune System Quiz

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Questions and Answers

What is immunology?

Immunology is the study of the host defense system and immune responses to foreign substances.

What are the surface barriers that pathogens have to cross to establish an infection?

The surface barriers include skin, mucus, and enzymes.

What are the two host defense systems that pathogens encounter once they reach tissue/cells?

Pathogens encounter the innate and adaptive host defense systems.

What are the different types of defense barriers mentioned in the text?

The different types of defense barriers are anatomic/physical, physiological/chemical, phagocytic, and inflammatory barriers. Signup and view all the answers

What is immunity according to the text?

Immunity refers to the ability of the host system to resist and cope up against infection or disease. Signup and view all the answers

What are granulocytic cells also known as?

Granulocytes are also called polymorphonuclear leukocytes or PMNs. Signup and view all the answers

What is the origin of the term 'Neutrophils'?

The term 'Neutrophils' is derived from Latin neuter, neither, and philien, stain readily at a neutral pH. Signup and view all the answers

How long do neutrophils circulate in the peripheral blood before migrating into the tissues?

Neutrophils circulate for 7–10 hours in the peripheral blood before migrating into the tissues. Signup and view all the answers

What is the lifespan of neutrophils in the tissues?

Neutrophils have a life span of only a few days in the tissues. Signup and view all the answers

What is the primary function of neutrophils in the body?

Neutrophils are highly phagocytic cells and rapidly migrate to the site of tissue damage and infection, where they are the principal phagocytic and microbicidal cells. Signup and view all the answers

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