Chapter 14: Vocabulary Flashcards

1
Q

adaptive immunity

A

ability to recognize and remember specific antigens and mount an attack
Example: humoral (B cell) & cell-mediated immunity (T cell)

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2
Q

adenoids

A

mass of lymphatic tissue in the nasopharynx

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3
Q

antibody

A

protein produced by B cells to destroy antigens

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4
Q

antigen

A

substance that the body recognizes as foreign

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5
Q

axillary nodes

A

lymph nodes in the armpit

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6
Q

B cell (B lymphocyte)

A

lymphocyte that matures into a plasma cell to secrete antibodies

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7
Q

cell-mediated immunity

A

T cells that respond to antigens and destroy them

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8
Q

cervical nodes

A

lymph nodes in the neck region

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9
Q

complement system

A

proteins in the blood that help antibodies kill their target

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10
Q

cytokines

A

proteins secreted by cytotoxic T cells to aid in antigen destruction
example: interferons and interleukins

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11
Q

cytotoxic T cell

A

lymphocyte that directly kills antigens; called CD8-positive T cell

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12
Q

dendritic cell

A

antigen-presenting cell. Shows T and B cells what to attack

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13
Q

helper T cell

A

lymphocyte that aids B cells and stimulates T cells. also called CD4-positive T cell

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14
Q

humoral immunity

A

B cells produce antibodies after exposure to specific antigens; type of adaptive immunity

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15
Q

immunity

A

body’s ability to resist foreign organisms and toxins that damage tissues and organs

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16
Q

immunoglobulins

A

antibodies such as IgA, IgE, IgG, IgM, and IgD; secreted by plasma cells in response to the presence of an antigen

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17
Q

immunotherapy

A

use of immune cells, antibodies, or vaccines to treat or prevent disease

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18
Q

inguinal nodes

A

lymph nodes in the groin region

19
Q

interferons

A

proteins that stimulate the growth of B and T lymphoctyes

20
Q

interstitial fluid

A

fluid in the spaces between cells. this fluid becomes lymph when it enters lymph capillaries

21
Q

lymph

A

thin, watery fluid found within lymphatic vessels and collected from tissues throughout the body

22
Q

lymph capillaries

A

tiniest lymphatic vessels

23
Q

lymphoid organs

A

lymph nodes, spleen, and thymus gland

24
Q

lymph node

A

collection of stationary solid lymphatic tissue along lymph vessels; contains cells (lymphocytes and macrophages) that fight infection

25
lymph vessel
carrier of lymph throughout the body; lymphatic vessels empty lymph into veins in the upper part of the chest
26
macrophage
large phagocyte found in lymph nodes and other tissues of the body
27
mediastinal nodes
lymph nodes in the area between the lungs in the thoracic cavity
28
mesentric nodes
lymph nodes in the mesentery (intestinal region)
29
monoclonal antibody
antibody produced in a laboratory to attack antigens and to destroy cells
30
natural immunity
protection that an individual is born with to find infection such as neutrophils, monocytes, macrophages, and NK cells. (natural killer cells) Is not antigen specific and does not elicit memory
31
paraaortic nodes
lymph nodes near the aorta in the lumbar area of the body
32
plasma cell
lymphocyte that secretes antibodies. matures from B cells
33
right lymphatic duct
lymphatic vessel in the chest that drains lymph from the upper right part of the body
34
spleen
organ in the LUQ of the abdomen that destroys worn-out red blood cells, activates lymphocytes and stores blood
35
suppressor T cell
lymphocyte that inhibits the activity of B and T cells. also called Treg (regulatory T cell)
36
T cell (T lymphocyte)
lymphocyte that acts directly on antigens to destroy them or produce chemicals such as interferons and interleukins that are toxic to antigens
37
tolerance
the ability of T lymphocytes to recognize and accept the body's own antigens as "self" or friendly. once tolerance is established, immune system will not react against body
38
thoracic duct
large lymphatic vessel that drains lymph from the lower and left side of the body
39
thymus gland
lymphoid organ in the mediastinum that conditions T cells to react to foreign cells and aids in the immune response
40
tonsils
masses of lymphatic tissue in the back of the oropharynx
41
toxin
poison; protein produced by certain bacteria, animals or plants
42
vaccination
exposure to an antigen that provokes an immune response
43
vaccine
weakened or killed microorganisms, toxins, or other proteins given to induce immunity to infection or disease