Lymphatic and Immune Systems Flashcards

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1
Q

What does the lymphatic system do?

A
  • has lymphocytes to fight infection
  • one way drainage system from body tissue to blood circulation
  • gets rid of waste products produced by cells
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2
Q

What does the lymphatic system work with?

A

immune system

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3
Q

What are the organs of the lymphatic system?

A
  • thymus
  • spleen (largest organ)
  • lymph nodules
  • lymph nodes
  • interstitial fluid (between cells)
  • adenoids
  • tonsils
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4
Q

What is the purpose of the immune system?

A

protects against pathogens

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5
Q

What are examples of pathogens?

A
  • bacteria
  • viruses
  • fungi
  • toxins
  • parasites
  • cancer
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6
Q

Define pathogens.

A

something that can cause disease

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7
Q

Where does lymph flow through?

A

lymphatic vessels, lymph capillaries, lymph nodes

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8
Q

What are lymph nodes?

A

small, glandular structures

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9
Q

Where are lymph nodes primarily located?

A

neck, axilla, groin

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10
Q

What is the function of lymph nodes?

A

produces and stores lymphocytes

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11
Q

What are lymph nodules?

A

masses of tissue that contain macrophages and lymphocytes

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12
Q

Where are lymph nodules?

A

spleen and tonsils

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13
Q

Where is the thymus?

A

located posterior to sternum

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14
Q

What is the function of thymus?

A

makes t-cells
- assists with production of lymphocytes for the immature immune system

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15
Q

What happens to thymus as we age?

A

atrophies (decreases in size)
- once immune system is functional, thymus is nonexistent

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16
Q

What is the spleen?

A

largest lymphatic organ in the upper left quadrant of abdominal cavity

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17
Q

What do macrophages filter?

A

blood

18
Q

What response is inflammation?

A

first response

19
Q

What is the purpose of inflammation?

A

traps bacteria and other agents

20
Q

What are signs of inflammation?

A
  • swelling
  • heat
  • redness
  • pain
21
Q

What are antigens?

A

foreign substances the body doesn’t recognize on the surfaces of pathogens

22
Q

Why do we have fevers?

A

helps the immune system fight infections
- higher temperatures speed up processing of immune cells and makes it harder for bacteria and viruses to thrive in the body

23
Q

Which lymphocytes recognize antigens in the body?

A

T cells
B cells

24
Q

Which lymphocytes attack cells?

A

T cells

25
Q

Which lymphocytes make antibodies?

A

B cells

26
Q

What are antibodies?

A

produced to respond to specific antigens

27
Q

How do antibodies work?

A
  • help eliminate disease-causing microbes from the body
  • directly destroying pathogens or by blocking them from infecting cells
28
Q

What are immunoglobulins?

A

AKA antibodies

29
Q

What is a natually acquired active immunity?

A

being exposed to a live pathogen, developing the disease, and then becoming immune
- body makes antibodies against disease and makes memory cells
- chicken pox

30
Q

What is an artificially acquired active immunity?

A

from injection of a vaccination
- vaccine has active antigens to prevent development of the disease

31
Q

What is a naturally acquired passive immunity?

A

passed from mother to child
- antibodies pass through the placenta to protect the child from illness
- infant continues to receive immunity to disease from antibodies found in breast milk

32
Q

What is artificially acquired passive immunity?

A

patient injected with antibodies by injection or infusion made by someone else

33
Q

What is anaphylaxis?

A

life threatening allergic response

34
Q

When can anaphylaxis occur?

A

within seconds or minutes of exposure to allergen

35
Q

How can you treat anaphylaxis?

A

injection of epinephrine

36
Q

What is an autoimmune disease?

A

condition in which the immune system mistakenly attacks the body

37
Q

What happens to people with an autoimmune disease?

A
  • immune system mistakes part of the body as foreign
  • releases proteins (auto-antibodies) that attack healthy cells
38
Q

What are examples of autoimmune diseases?

A
  • Graves disease
  • lupus
  • multiple sclerosis
  • rheumatoid arthritis
  • Type 1 diabetes mellitus
  • Guillain-Barre syndrome
39
Q

What is immunocompetent?

A

normal functioning immune system

40
Q

What is immunodeficient/immunosuppressed/immunocompromised?

A

state in which the immune system’s ability to fight infectious diseases and cancer is compromised or entirely absent

41
Q

What is opportunistic infections?

A

infections a normal immune system would be able to fight off