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Flashcards in Leukocytes--white blood cells Deck (30)
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1

what is the shape of the leukocytes?

spherical shape

2

what are the functions of the leukocytes?

1. protection from foreign microorganism
2. remove dead cells and debris

3

what are the movements of the leukocytes?

1. movement in blood
2. movement in ameboid in tissues

4

why do we want leukocytes to leave out of your blood vessels?

to move through tissue

5

what are the two classifications of the leukocytes?

1. granulocytes
2. agranulocytes

6

what is meant by granulocytes?

they have granules

7

what are the granulocytes of the leukocytes?

1. neutrophils (aka: PMN's)
2. basophils
3. eosinophils

8

what are the agranulocytes of the leukocytes?

1. lymphocytes
2. monocytes

9

what are meant by agranulocyte?

has NO granules

10

granules are collection of what?

collection of enzymes

11

which granule is most common in the leukocytes?

neutrophils

12

what is the % of neutrophils in leukocytes?

60-70%

13

neutrophils have a lining in the inner surface of the nuclear envelope. what is the name of this lining?

heterochromatin

14

the nucleus in neutrophils has how many lobes?

2-5 lobes (usually 3 lobes)

15

neutrophils have few of what organelle?

few mitochondria

16

what are the specific granules neutrophils have?

1. alkaline phosphates
2. collagenase
3. lactoferrin
4. 2/3's of cells lysozyme

17

these are known as what?

collection of enzymes

18

what are the deep reddish purple granules in neutrophils?

azurophilic granules

19

what are azurophilic granules?

primary lysosome

20

why do neutrophils use these different kinds of enzymes?

to break down and kill foreign substances or to clean up debris

21

neutrophils are known to be the first what?

first to arrive at injury or inflammation; first sign of defense

22

what is the life of neutrophils?

short half-life, 1 to 4 days

23

where are neutrophils formed?

medullary formation

24

what are the 4 compartments in the neutrophils?

1. medullary storage
2. circulating "patrolling"
3. marginating (temporary excluded from the circulatory)
4. connective tissue

25

summary of neutrophils

formed in the medullary
....stays in the bone
....circulates in the blood
....can get out of the blood and
....wonder around in the connective tissues

26

what do you call the process in which PMN's enter circulation from connective tissue?

Diapedesis

27

what is the function of the diapedesis?

phagocytosis (engulfing and then digesting of solid waste or foreign material by cell)

28

presence of what, is in response to stimuli and NOT created by increase production?

presence of PMN's

29

define stimuli

muscle activity, epinephrine release, bacterial infection

30

what should you remember about Neutrophils?

they are the FIRST sign of defense, the first cell that shows up at the sight of infection or inflammation