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immune system Flashcards

1
Q

What is the primary function of the immune system?

A

To protect the body against infections and diseases.

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2
Q

True or False: The immune system is only composed of white blood cells.

A

False

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3
Q

Fill in the blank: The two main types of immune responses are _______ and _______.

A

innate, adaptive

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4
Q

What type of cells are primarily responsible for the adaptive immune response?

A

Lymphocytes

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5
Q

Which type of lymphocyte is responsible for producing antibodies?

A

B cells

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6
Q

What are the two main components of the innate immune system?

A

Physical barriers and immune cells

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7
Q

True or False: Antibodies are produced by T cells.

A

False

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8
Q

What is the role of T helper cells in the immune response?

A

To assist other immune cells in the response.

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9
Q

Which organ is primarily responsible for the maturation of T cells?

A

Thymus

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10
Q

What is the function of phagocytes in the immune system?

A

To engulf and digest pathogens.

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11
Q

Fill in the blank: The _______ is a fluid that contains white blood cells and is part of the lymphatic system.

A

lymph

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12
Q

What is the difference between active and passive immunity?

A

Active immunity results from exposure to a pathogen, while passive immunity is acquired from another source.

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13
Q

True or False: Vaccines provide passive immunity.

A

False

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14
Q

What is an antigen?

A

A substance that triggers an immune response.

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15
Q

What type of immune response is characterized by a rapid reaction to previously encountered pathogens?

A

Secondary immune response

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16
Q

What are cytokines?

A

Signaling proteins that mediate and regulate immunity and inflammation.

17
Q

Fill in the blank: _______ cells are involved in the direct killing of infected or cancerous cells.

A

Cytotoxic T

18
Q

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

A

To filter blood and help mount immune responses.

19
Q

True or False: The skin is considered part of the innate immune system.

A

True

20
Q

What is the role of memory cells in the immune system?

A

To provide long-term immunity by remembering past infections.

21
Q

What does HIV primarily target in the immune system?

A

CD4+ T cells

22
Q

Fill in the blank: The _______ response is the body’s first line of defense against pathogens.

A

innate

23
Q

What is the term for the process by which immune cells recognize and destroy infected cells?

A

Cell-mediated immunity

24
Q

What is an autoimmune disease?

A

A condition where the immune system attacks the body’s own cells.

25
Q

True or False: All vaccines contain live pathogens.

A

False

26
Q

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

A

Humoral immunity involves antibodies, while cell-mediated immunity involves T cells.

immune system (1 decks)

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