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Flashcards in General Deck (33):
1

4 functions of blood

1. transport
2. temp and pH regulation
3. protect agains infection
4. coagulation

2

Main components of blood (%)

1. plasma (55)
2. WBC (<1)
4. RBC (45)

3

Formula for hemoclobin

3x hematocrit

4

define mean cell volume

how big an RBC are

5

define mean cell width

degree of differences between sizes of cells

6

features of erythrocyte

1. discoid shape
2. contains heme and globin

7

RBC lifespan

120 days

8

define good central pallor of RBC

1/3, 1/3, 1/3

9

define anemia

decreased hemoglobin - less O2 cap.

10

causes of anemia (3)

1. decr. production
2. incr. destruction
3. dilution sequestration

11

define polycythemia

too many RBCs

12

symptoms of polycythemia

headache, plethora, shortness of breath, numbeness

13

Types of leukocytes

1. Neutrophils
2. Eosonophils
3. Basophils
4. Lymphocytes
5. Monocytes

14

Features of neutrophils

slightly bigger than RBCs
2-5 lobe nucleus
granules in cytoplasm

15

function of neutrophil

main infection fighter

16

life of neutrophils

5 days

17

consequence of neutropenia

bacterial infections

18

causes of neutrophilia (3)

1. demarginalization
2. reactive (incr. production)
3. malignancy

19

features of eosonophils

2-3 lobes
large granules
localize to tissues

20

functions of eosonophils (3)

1. cytotoxic
2. inflammatory reactions
3. hypersensitivity reactions

21

causes on eosonophilia (3)

1. allergic reactions
2. parasitic reactions
3. malignancy

22

features of basophils

large black granules

23

3 granulocytes

1. neutophils
2. eosonophils
3. basophils

24

features of lymphocytes

mononuclear
scant bule cytoplasm
nucleus the size of RBC

25

2 main functions of lymphocytes

1. viral surveillance - antibodies
2. between lymphoid tissues and systemic circulation

26

2 main types of lymhocytes

1. B - antigen receptors and antibodies
2. T - CD4, CD8, natural killer

27

causes of lymphopenia (3)

1. decr. production
2. incr. destruction
3. dilution sequestration

28

causes of lymphocytosis

1. viral
2. stress
3. smoking
4. malignancy

29

features of monocytes

double size of RBC
horseshoe nucleus
fine reddish granules
migrate to tissues

30

2 differnent end cells of monocytes

1. macrophages
2. dendritic cells

31

cause if monocytosis

1. chronic infection
2. chronic inflammation
3. malignancy

32

featues of platelets (thrombocytes)

very small
fine purple granules

33

causes of thrombocytosis

1. reactive
2. bone marrow malignancy
3. redistributive (post-splenectomy)

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