Unit 4 - Lymphatic & Immune Systems Flashcards Preview

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Flashcards in Unit 4 - Lymphatic & Immune Systems Deck (29)
1

lymph/o

lymph - the liquid
- a clear, watery fluid that contains
- water / salt / sugar / waste products (urea & creatinine)

2

lymphaden/o

lymph gland (node)
- stationary tissue that produces WBC (lymphocytes and macrophages
- swollen when bacteria present

3

where are the clusters of lymph nodes?

adenoids (nasopharynx)
tonsils (oropharynx)
cervical (neck)
axillary (armpit)
mediastinal (chest)
mesenteric (intestinal)
paraaortic (lumbar)
inguinal (groin)

4

right lymphatic duct drains what part of body?

right side of head
right arm
part of right chest

5

thoracic duct drains what part of body?

left side of head
lower body
left arm
part of left chest

6

lymphatic organs

spleen
thymus gland

7

spleen

LUQ
- destroys old erythrocytes (RBC)
- filters or purifies blood
BUT, is optional organ; can live w/o it
- produces lymphocytes
- storage for blood, especially RBC and platelets

8

thym/o

thymus gland - really active as a newborn
located in mediastinum
- releases T-cells (lymphocytes)
- produces antibodies

9

splenomegaly

enlargement of spleen

10

natural (innate) immunity

resistance is present at birth
- genetic characteristics of a person's ability to fight off infection

11

acquired (adaptive) immunity

receiving immunity by:
1. active (acquired) immunity - having disease or vaccination
2. passive immunity - - immediate protection - antitoxins or gamma globulin

12

types of Lymphocytes

1. B-cells (humoral immunity) - originates from bone marrow. After contact w/antigen become plasma cells which secrete antibodies (immunoglobulins)
2. T-cells (cell-mediated immunity) - originate from stem cells in bone marrow and thymus; multiply rapidly to produce cells that destroy antigen

13

What are the 3 type of T-cells?

1. Killer Cells (T8) - destroy foreign cells
2. Helper Cells - promotes antibody synthesis by neutralizing antigens
3. Suppressor Cells - helps regulate and inhibit activity of B and T lymphocytes

14

T-cells secrete 2 proteins:

They are antibodies
1. interferons - stimulates macrophages to ingest bacteria
2. interleukins - stimulates growth of T-cell lymphocytes and B lymphocytes

15

HIV

human immunodeficiency virus
a retrovirus - has its own reverse trascriptase; replicates inside host cell

16

opportunistic disease

infectious disease associated w/AIDS
fungus
parasitic
viral - herpes simplex (blisters on nose, lip, genitals)
bacteria

17

fungus

a yeast-type infection
ex. thrush, Candidiasis

18

Toxoplasmosis

a parasite that can cause fever, chills, confusion, visual disturbances

19

PCP

pneumocystis carinii penuemonia - fever, productive cough, chest pain

20

symptoms of HIV

oral thursh
night sweats
fatigue
evidence of opportunistic disease

21

AIDS

Acquired Immunodeficiency Syndrome
- active disease
- syndrome of suppressed immune system
- neurological problems

22

ELISA

enzyme linked immunosorbent assay - looks for anti-HIV antibodies
- test to determine if patient has been infected w/HIV

23

Western Blot

a test to confirm HIV infection

24

lymph/angi/o/gram

X-ray of lymph vessels

25

lymph/oma

tumor of the lymphoid tissue

26

hyper/spleen/ism

- condition of too much spleen (enlargement of)
- often assoc w/blood cell destruction; anemia; leukopenia; thrombocytopenia

27

lymphoma

cancer of lymph nodes

28

Hodgkin's Disease

type of lymphoma
- presence of Reed-Sternberg cell
- malignant tumor of lymphoid tissue

29

Non-Hodgkin's Disease

still affects lymphoid tissue, but doesn't have Reed-Sternberg cells