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Immune System Functions and Immunity Quiz

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Immune System Functions and Immunity Quiz

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Questions and Answers

What is the main function of the immune system?

To defend the body against pathogens and foreign substances (correct)

To maintain a healthy body weight

To cause tissue injury and disease

To regulate the body's temperature

Which of the following is NOT a primary lymphoid organ?

Thymus

Spleen

Bone marrow

Lymph nodes (correct)

What is the role of the thymus in the immune system?

The thymus filters lymph fluid and removes waste products.

The thymus produces red blood cells.

The thymus is responsible for regulating body temperature.

The thymus is a primary lymphoid organ where T cells mature and differentiate. (correct)

Which of the following is a characteristic of the immune system's ability to cause tissue injury and disease?

All of the above Signup and view all the answers

What is the main difference between primary and secondary lymphoid organs?

Primary lymphoid organs mature and differentiate immune cells, while secondary lymphoid organs store and activate immune cells. Signup and view all the answers

What is the primary function of type I interferons produced in response to viruses?

To degrade viral nucleic acids and inhibit viral replication in infected and uninfected cells Signup and view all the answers

Which of the following is the main purpose of the pathogen-associated molecular patterns recognized by innate immune receptors?

To provide essential functions for the survival and infectivity of the microbes Signup and view all the answers

What is the primary difference between humoral immunity and cell-mediated immunity?

Humoral immunity provides protection against extracellular pathogens, while cell-mediated immunity provides protection against intracellular microbes Signup and view all the answers

What is the primary function of pattern recognition receptors expressed by cells of the innate immune system?

To sense the presence of infectious agents and substances released from dead cells Signup and view all the answers

What is the primary role of the innate immune system in providing host defense?

To trigger inflammation and anti-viral defense mechanisms that limit the spread and replication of pathogens Signup and view all the answers

Which of the following is NOT a primary (generative) lymphoid organ?

Lymph nodes Signup and view all the answers

Which of the following cell types is NOT involved in innate immunity?

B cells Signup and view all the answers

What is the primary function of lymph nodes?

Concentrate antigens from tissues Signup and view all the answers

Which of the following statements about innate immunity is FALSE?

It requires prior exposure to pathogens for activation Signup and view all the answers

What is the primary function of dendritic cells in the immune system?

Present antigens to T cells Signup and view all the answers