Final Histo - Lymphatic System

Question 1

What structures compose the lymphatic system

Answer 1

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

Question 2

What are the organs of the lymphatic system

Answer 2

lymph nodes
spleen
bone marrow
thymus

Question 3

What are the major functions of the lymphatic system

Answer 3

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

Question 4

What is the purpose of draining excess interstitial fluid

Answer 4

to return to blood stream to help maintain normal blood volume

Question 5

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

Answer 5

thoracic duct to left IVC and left subclavian

Question 6

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

Answer 6

right lymphatic duct to right Ivc and right subclavian

Question 7

These lymphocytes produce and secrete antibodies; involved with humoral immunity

Answer 7

B cells

Question 8

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

Answer 8

T cells

Question 9

These lymphocytes kill transformed cells

Answer 9

natural killer cells

Question 10

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

Answer 10

B cells

Question 11

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

Answer 11

T cells

Question 12

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

Answer 12

NK cells

Question 13

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

Answer 13

diffuse lymphatic tissue

Question 14

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

Answer 14

lymphatic nodules

Question 15

What is the meshwork and cell type of lymphatic nodules

Answer 15

meshwork = reticular cells

cell types = lymphocytes, plasma cells, and eosinophils

Question 16

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

Answer 16

primary nodule

Question 17

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

Answer 17

secondary nodule

Question 18

Where in there body are there aggregations of lymphatic nodules

Answer 18

tonsils
Peyers patches in ileum
veriform apendix

Question 19

What does MALT stand for

Answer 19

mucus-associated lymphatic tissue

Question 20

What does GALT stand for and what is it associated with

Answer 20

gut-associated lymphatic tissue; associated with alimentary tract

Question 21

What does BALT stand for and what is it associated with

Answer 21

bronchus-assocaited lymphatic tissue; associated with the respiratory system

Question 22

This is a capsulated organ along the pathway of lymphatic vessels

Answer 22

lymph node

Question 23

What is the function of a lymph node

Answer 23

filtering system

Question 24

What are the parts of a lymph node

Answer 24

capsule
trabeculae
reticular tissue
hillum
cortex
medulla

Question 25

This is the dense connective tissue portion of a lymph node

Answer 25

trabeculae

Question 26

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

Answer 26

reticular tissue

Question 27

What are the portions of the cortex of the lymph node

Answer 27

``` superficial (nodular) cortex deep cortex (paracortex) ```

Question 28

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

Answer 28

``` lymphatic nodules (primary and secondary) germinal centers ```

Question 29

What are the portions of the medulla of the lymph node

Answer 29

medullary cords | medullary sinuses

Question 30

What are the cells in the reticular meshwork

Answer 30

reticular cells dendritic cells marcophages follicular dendritic cells

Question 31

What is the flow of lymph through the lymph node

Answer 31

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

Question 32

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

Answer 32

thymus

Question 33

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

Answer 33

spleen

Question 34

What two pulps does the spleen consist of

Answer 34

red and white pulp

Question 35

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

Answer 35

red pulp

Question 36

What is the function of the red pulp

Answer 36

blood filtration

Question 37

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

Answer 37

white pulp

Question 38

What is the function of white pulp

Answer 38

carry out immune functions similar to lymph nodes