Histology- Lymphatic System

Front 1

lymphatic system includes

Back 1

1. lumphatic tissue
2. partially encapsualted tissue ex; tonsils
3. fully encapsulated lymph tissue ie; lymphatic organs

Front 2

lymphatic tissue in general is made up of 2 components. name them

Back 2

1. stroma
2. parenchyma

Front 3

Stroma or finrous frame work is made up of

Back 3

retricular tissue

Front 4

parenchymal components include some or all of?

Back 4

lymphocytes (mature and immature)
monocytes
histiocytes
plasma cells
lymph or blood sinusoids

Front 5

non encapsulated lymphatic tissue present in digestive and respiratory tracts, occurs in two types. name the two types

Back 5

nodular lymphatic tissue

diffuse lymphatic tissue

Front 6

nodular lymphatic tissue central region appears light and is called the?

Back 6

germinal center of the nodule.

Front 7

the outer zone of nodules is dark and called ?

Back 7

cortex

Front 8

nodules may be single, called solitary nodules or may form aggregates named?

Back 8

peyers patches of ileum

Front 9

partially encapsulated lymphatic tissue is found in various types of tonsils which represent accumulations of lymphatic tissue

Back 9

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Front 10

what are the types of tonsils?

Back 10

2 palatine
1 lingual
1 pharyngeal

Front 11

structure of tonsils- mucous membrane dips inside lymphatic tissue of tonsil to to form tubular invaginations called?

Back 11

tonsillar crypts

Front 12

Surface epithelium of tonsil mucous membrane is? but pseudo strat columnar ciliated with some goblet cells in?

Back 12

strat squam non-ker in palatine and lingual tonsils

pharyngeal tonsils

Front 13

The stroma contains

Back 13

bl vessels, nerves, and draining lymphatic of tonsil

Front 14

the stroma seperates the deep part of tonsil from the

Back 14

underlying tissue

Front 15

Fully encapsulated lymphatic tissue includes

Back 15

lymphatic organs as lymph nodes, spleen an thymus

Front 16

Lymph nodes are bean shaped with depression called?

Back 16

hilum

Front 17

Lymph nodes- in stained preperations, the outer zone appears dark and is called cortex, the inner zone is light and called

Back 17

medulla

Front 18

Structure of Lymph node layers are?

Back 18

Stroma
parenchymal

Front 19

Lymph node layer stroma is made up of?

Back 19

capsule
cortical and medullary trabeculae
reticular tissue

Front 20

In parenchymal layer the cortex forms_________ which are limited to cortex and may show germinal centers

Back 20

cortical nodules

Front 21

in parenchymal layer, medulla, lymphatic tissue is in form of _________ ____ ____

Back 21

irregular branching cords, of densely arranged cells called medullary cods

Front 22

in parenchymal layer, lymph sinuses are made of what three things?

Back 22

subcapsular, cortical and medullary sinuses

Front 23

Circulation of lymph in a lymph node

Back 23

-

Front 24

lymph enters by ?

Back 24

afferent lymphatics
`

Front 25

lymph is reveived by ________ lying under capsule, their lymph passes to _________ then to _______ sinuses. from there to ______ lymphatics which exit the node at hilum

Back 25

1. subcapsular sinuses
2. cortical sinuses
3. medullary
4. efferent

Front 26

Thymus lie in suerior and extend into ?

Back 26

anterior mediastinum

Front 27

histological structure made up of 2 layers. what are they?

Back 27

stroma
parenchyma

Front 28

thymus- the cytoreticulum is made of branching cells attached together by their proceeses and called ?

Back 28

epithelial -retricular cells

Front 29

they secrete a factor called thymic factor or

Back 29

thymosin

Front 30

thymosin factor is important in the development of?

Back 30

immunologically competent lymphocytes by lymphatic system.

Front 31

Parenchyma layer.
cortex is made up of lymphocytes called

Back 31

thymocytes or T-lymphocytes

Front 32

parenchyma layer.
Hassall corpuscles or _____ corpuscles are bodies characteristic to medulla of thymus and is made up of degenerating epithelial _______ cells

Back 32

1. thymic
2. reticular

Front 33

Spleen is the largest?

Back 33

lymphatic organ in the body

Front 34

In spleen _______ and not lymph circulate in its tissue.

Back 34

blood
it is considered a hemal lymph node

Front 35

Anatomical features of spleen include

Back 35

hilum- bl vessels enter and leave
white pulp- light spots
red pulp-reddish background

Front 36

parenchyma made up of lymphatic tissue and splenic blood sinuses.

Back 36

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Front 37

White pulp is made up of

Back 37

Nodules of lymphatic tissuecalled splenic nodes.

Front 38

white pulp nodules are scattered in the spleen and show a characteristic _________ at one side of each nostril

Back 38

central arteriole

Front 39

parenchyma red pulp is made up of

Back 39

irregular branching cords

Front 40

splenic sinuses are blood sinuses with gaps between its lining cells

Back 40

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Front 41

Circulation of blood in spleen is

Back 41

splenic artery-------trabecular arteries--------central arterioles

Front 42

central aarterioles branch within the nodules and the branches exit nodules as straight vessels called

Back 42

penicilli.

Front 43

penicilli pour blood into sinuses drained by?

Back 43

pulp venules

Front 44

pulp venules drain into ?

Back 44

trabicular veins then drain to dplenic vein

Front 45

Function of the hormone of the thymus (thymosin) prmotes development of?

Back 45

immunologically competent lymphocytes.

Front 46

the spleen functions also as a

Back 46

reservoir of blood cells

Front 47

Old RBCs are destroyed in the?

Back 47

spleen