Final Histo - Lymphatic System Flashcards Preview

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Flashcards in Final Histo - Lymphatic System Deck (38):
1

What structures compose the lymphatic system

diffuse lymphatic tissue
lymphatic nodules
lymph nodes
spleen
bone marrow
thymus
lymphatic vessels

2

What are the organs of the lymphatic system

lymph nodes
spleen
bone marrow
thymus

3

What are the major functions of the lymphatic system

drain excess interstitial fluid
immune response
provide an alternative transportation route for hormones, nutrients, and waste products

4

What is the purpose of draining excess interstitial fluid

to return to blood stream to help maintain normal blood volume

5

Where does lymph from the left half of the upper body and the entire lower body (3/4 all together) drain

thoracic duct to left IVC and left subclavian

6

Where does lymph from the right half of the upper body (1/4 all together) drain

right lymphatic duct to right Ivc and right subclavian

7

These lymphocytes produce and secrete antibodies; involved with humoral immunity

B cells

8

These lymphocytes differentiate in the thymus; involved with cell-mediated immunity

T cells

9

These lymphocytes kill transformed cells

natural killer cells

10

These cells make up 20-30% of all circulating lymphocytes

B cells

11

These cells make up 60-80% of all circulating lymphocytes

T cells

12

These cells make up 5-10% of all circulating lymphocytes

NK cells

13

This is an accumulation of lymphocytes in the lamina propria of the alimentary canal, respiratory, urinary, and reproductive tract

diffuse lymphatic tissue

14

These are accumulations of lymphocytes also in the walls of the alimentary canal, respiratory, urinary and reproductive tracts

lymphatic nodules

15

What is the meshwork and cell type of lymphatic nodules

meshwork = reticular cells
cell types = lymphocytes, plasma cells, and eosinophils

16

This type of lymphatic nodule is an aggregation of primarily small lymphocytes

primary nodule

17

This type of lymphatic nodule will have a germinal center and a mantle zone (corona)

secondary nodule

18

Where in there body are there aggregations of lymphatic nodules

tonsils
Peyers patches in ileum
veriform apendix

19

What does MALT stand for

mucus-associated lymphatic tissue

20

What does GALT stand for and what is it associated with

gut-associated lymphatic tissue; associated with alimentary tract

21

What does BALT stand for and what is it associated with

bronchus-assocaited lymphatic tissue; associated with the respiratory system

22

This is a capsulated organ along the pathway of lymphatic vessels

lymph node

23

What is the function of a lymph node

filtering system

24

What are the parts of a lymph node

capsule
trabeculae
reticular tissue
hillum
cortex
medulla

25

This is the dense connective tissue portion of a lymph node

trabeculae

26

This is the meshwork like portion of mesenchymal cells of a lymph nodes

reticular tissue

27

What are the portions of the cortex of the lymph node

superficial (nodular) cortex
deep cortex (paracortex)

28

What are the portions of the superficial cortex of the lymph node

lymphatic nodules (primary and secondary)
germinal centers

29

What are the portions of the medulla of the lymph node

medullary cords
medullary sinuses

30

What are the cells in the reticular meshwork

reticular cells
dendritic cells
marcophages
follicular dendritic cells

31

What is the flow of lymph through the lymph node

afferent lymph vessel
subcapsular (cortical) sinus
trabecular sinus
medullary sinus
efferent lymph vessel

32

This organ is the site of thymic cell education; in which T cells mature and differentiate into immunocompetent T cels

thymus

33

This organ filters and monitors the blood immunological just as the lymph nodes monitor lymph

spleen

34

What two pulps does the spleen consist of

red and white pulp

35

This pulp of the spleen consists of blood filled venous sinuses surrounded by cords of splenic tissue called splenic cords

red pulp

36

What is the function of the red pulp

blood filtration

37

This pulp of the spleen consist of mostly lymphocytes aggregating around branches of the splenic artery creating a periarterial lymphatic sheath

white pulp

38

What is the function of white pulp

carry out immune functions similar to lymph nodes