Components of the immune systems Flashcards

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1
Q

What are antigens?

A

any part of an organism/substance which is recognised as foreign by the immune system and goes on to trigger an immune response.

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2
Q

What type of cell are Macrophages and Neutrophils?

A

Phagocytes

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3
Q

Function of Phagocytes

A

Engulfs and digests pathogens by fusion of the phagosome with lysosomes

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4
Q

Name 3 types of t cells

A

T helper cells Cytotoxic T cells T memory cells

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5
Q

What do T helper cells do?

A

Stimulates B cells to divide and secrete antibodies

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6
Q

What do Cytotoxic T cells do?

A

kill abnormal cells and infected body cells via perforin

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7
Q

What do T memory cells do?

A

Remain in the blood for years and provide long term protection

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8
Q

Name 2 b cells

A

Plasma cell B memory cell

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9
Q

What do Plasma cells do?

A

Secrete antibodies

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10
Q

What do B memory cells do?

A

Remain in the blood for years and provide long term protection

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11
Q

What are antibodies

A

a protein produced by lymphocytes in response to the presence of the corresponding antigen.

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12
Q

How do antibodies agglutinate pathogens?

A

forming antigen-antibody complexes, leading to phagocytosis & neutralise toxins.

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13
Q

Antibody diagram

A

see photo you beautiful bastard

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