The Immune System

Description: The immune system is a complex network of cells, tissues, and organs that work together to defend the body against infection. This quiz will test your knowledge of the immune system and its functions.
Number of Questions: 15
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Tags: biology health medicine
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What is the primary function of the immune system?

  1. To regulate body temperature

  2. To produce energy

  3. To defend the body against infection

  4. To transport oxygen and nutrients


Correct Option: C
Explanation:

The immune system's primary function is to protect the body from harmful substances, such as bacteria, viruses, and toxins.

Which type of immune response is responsible for attacking and destroying infected cells?

  1. Humoral immune response

  2. Cell-mediated immune response

  3. Innate immune response

  4. Adaptive immune response


Correct Option: B
Explanation:

The cell-mediated immune response is responsible for attacking and destroying infected cells. It involves the activation of T cells, which can directly kill infected cells or release chemicals that attract other immune cells to the site of infection.

Which type of immune response involves the production of antibodies?

  1. Humoral immune response

  2. Cell-mediated immune response

  3. Innate immune response

  4. Adaptive immune response


Correct Option: A
Explanation:

The humoral immune response involves the production of antibodies, which are proteins that can bind to and neutralize pathogens. Antibodies are produced by B cells, which are activated by antigens.

What is the role of macrophages in the immune system?

  1. To produce antibodies

  2. To attack and destroy infected cells

  3. To engulf and destroy foreign particles

  4. To regulate the immune response


Correct Option: C
Explanation:

Macrophages are phagocytic cells that engulf and destroy foreign particles, such as bacteria, viruses, and cellular debris. They play an important role in the innate immune response.

Which type of immune cell is responsible for producing memory cells?

  1. T cells

  2. B cells

  3. Macrophages

  4. Neutrophils


Correct Option: B
Explanation:

B cells are responsible for producing memory cells, which are long-lived cells that can quickly respond to a pathogen that the body has encountered before.

What is the function of the thymus gland in the immune system?

  1. To produce antibodies

  2. To mature T cells

  3. To store immune cells

  4. To regulate the immune response


Correct Option: B
Explanation:

The thymus gland is responsible for maturing T cells, which are a type of white blood cell that plays a crucial role in the adaptive immune response.

Which type of immune response is responsible for providing long-term protection against infection?

  1. Humoral immune response

  2. Cell-mediated immune response

  3. Innate immune response

  4. Adaptive immune response


Correct Option: D
Explanation:

The adaptive immune response is responsible for providing long-term protection against infection. It involves the activation of memory cells, which can quickly respond to a pathogen that the body has encountered before.

What is the role of cytokines in the immune system?

  1. To produce antibodies

  2. To attack and destroy infected cells

  3. To regulate the immune response

  4. To engulf and destroy foreign particles


Correct Option: C
Explanation:

Cytokines are small proteins that regulate the immune response. They are produced by immune cells and can act on other immune cells to activate or suppress their function.

Which type of immune cell is responsible for releasing histamine and other inflammatory mediators?

  1. T cells

  2. B cells

  3. Macrophages

  4. Mast cells


Correct Option: D
Explanation:

Mast cells are responsible for releasing histamine and other inflammatory mediators, which are involved in the inflammatory response.

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

  1. To produce antibodies

  2. To mature T cells

  3. To store immune cells

  4. To filter blood


Correct Option: D
Explanation:

The spleen is responsible for filtering blood and removing old or damaged red blood cells, as well as foreign particles and pathogens.

Which type of immune response is responsible for providing immediate protection against infection?

  1. Humoral immune response

  2. Cell-mediated immune response

  3. Innate immune response

  4. Adaptive immune response


Correct Option: C
Explanation:

The innate immune response is responsible for providing immediate protection against infection. It involves the activation of physical barriers, such as the skin and mucous membranes, as well as the production of antimicrobial substances, such as interferons.

What is the role of the lymph nodes in the immune system?

  1. To produce antibodies

  2. To mature T cells

  3. To store immune cells

  4. To filter lymph


Correct Option: D
Explanation:

The lymph nodes are responsible for filtering lymph and removing foreign particles and pathogens. They also contain immune cells, such as lymphocytes, which can activate an immune response.

Which type of immune cell is responsible for producing natural killer cells?

  1. T cells

  2. B cells

  3. Macrophages

  4. Bone marrow


Correct Option: D
Explanation:

The bone marrow is responsible for producing natural killer cells, which are a type of white blood cell that can kill infected cells and tumor cells.

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

  1. To produce antibodies

  2. To attack and destroy infected cells

  3. To regulate the immune response

  4. To enhance the activity of antibodies


Correct Option: D
Explanation:

The complement system is a group of proteins that work together to enhance the activity of antibodies and promote the destruction of pathogens.

Which type of immune response is responsible for providing protection against intracellular pathogens?

  1. Humoral immune response

  2. Cell-mediated immune response

  3. Innate immune response

  4. Adaptive immune response


Correct Option: B
Explanation:

The cell-mediated immune response is responsible for providing protection against intracellular pathogens, such as viruses and bacteria that live inside cells.

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