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Anatomy (S2)(Unit 3) > Histo (04.13) Lymphatic System > Flashcards

Histo (04.13) Lymphatic System Flashcards

1
Q

the lymphatic system is composed of what 7 things?

A
  • diffuse lymphatic tissue
  • lymphatic nodules
  • lymph nodes
  • spleen
  • bone marrow
  • thymus
  • lymphatic vessels
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2
Q

what are the three major functions of the lymphatic system

A
  • drain excess interstitial fluid
  • immune response
  • provide alternative transportation route for hormones, nutrients, and waste
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3
Q

the lymphatic system drains excess interstitial fluid to return to ___ ___ to help maintain normal blood ____

A
  • blood stream

- volume

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4
Q

the immune response of the lymphatic system is to produce, maintain, and distribute ____

A

lymphocytes

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5
Q

what are the three types of lymphocytes?

A
  • b cells
  • t cells
  • natural killer cells
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6
Q

type of lymphocytes that first recognized in the bursa of fabricius in birds; produce and secrete antibodies along with their derivative cell (plasma cell); involved with humoral immunity

A

B cells

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7
Q

B cells are ___-____% of circulating lymphocytes

A

20-30

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8
Q

type of lymphocytes that differentiate in the thymus; attach and destroy cells; involved with cell-mediated immunity;

A

T cells

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9
Q

T cells are ___-___% of circulating hormones

A

60-80

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10
Q

type of lymphocytes that kill certain transformed cells

A

natural killer cells

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11
Q

natural killer cells are ____ - ____% of circulating hormones

A

5-10

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12
Q

list the other supporting cells involved with the lymphatic system

A
  • reticular cells
  • monocytes
  • macrophages
  • neutrophils
  • basophils
  • eosinophils
  • dendritic cells
  • follicular cells
  • langerhan cells
  • epithelioreticular cells
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13
Q

once interstitial fluid is inside the lymphatic capillaries it is now called ____

A

lymph

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14
Q

when fluid is not drained in the lymphatic system due to blockage it is known as ____

A

adema

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15
Q

largest lymphatic duct is the ____ ___

A

thoracic duct

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16
Q

DIFFUSE and lymphatic tissue and LYMPHATIC NODULES are accumulations of lymphocytes in the ___ ___ of the alimentary canal, as well as _____,____, and ____ tracts

A
  • lamina propria
  • respiratory
  • urinary
  • reproductive
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17
Q

the DIFFUSE lymphatic tissue and LYMPHATIC NODULES have no ___ ____

A

surrounding capsule

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18
Q

lymphatic nodules are sharply defined and are a meshwork of ____ ____

A

reticular fibers

19
Q

what are the two types of lymphatic nodules?

A
  • primary nodule

- secondary nodule

20
Q

lymphatic nodule that is the aggregation of primarily small lymphocytes

A

primary nodule

21
Q

lymphatic nodule that will have a germinal center and a mantle zone

A

secondary nodules

22
Q

in secondary nodules, ____ ___ ____ are present in germinal centers

A

follicular dendritic cells

23
Q

normally, lymphatic nodules are found ____ ____ and by themselves, however, in certain locations of the alimentary canal, they are ___ ____

A
  • randomly dispersed

- grouped together

24
Q

AGGREGATED lymphatic nodules that create a ring around entrance to the oropharynx and the nasopharynx

A

tonsils

25
Q

AGGREGATED lymphatic nodules that are located in the ileum

A

peyer’s patches

26
Q

when naming diffuse tissue and nodules, they are named according to the ___ or ____ in which they appear

A
  • region

- organ

27
Q

MALT

A

mucus-associated lymphatic tissue

28
Q

GALT

A

gut-associated lymphatic tissue

*associated with the alimentary tract

29
Q

BALT

A

bronchus-associated lymphatic tissue

*associated with the respiratory system

30
Q

lymph NODES are ____ organs along pathway of lymphatic vessels that function as a ___ ____

A
  • capsuled

- filtering system

31
Q

three parts of the lymph node that make up the stroma

A
  • capsule
  • trabeculae
  • reticular tissue/meshwork
32
Q

2 parts of the lymph node that make up the parenchyma

A
  • cortex

- medulla

33
Q

what are the two types of cortex on lymph nodes

A
  • superficial cortex (has lymphatic nodules)

- deep cortex (paracortex)

34
Q

what two things make up the medulla of lymph nodes

A
  • medullary cords

- medullary sinuses

35
Q

what are the four cells of the reticular meshwork of lymph nodes

A
  • reticular cells
  • dendritic cells
  • macrophages
  • follicular dendritic cells
36
Q

what is the flow of lymph through a lymph node (5 things)

A
  1. afferent lymph vessel
  2. subcapsular (cortical) sinus
  3. trabecular sinus
  4. medullary sinus
  5. efferent lymph vessel
37
Q

the thymus is the site of ___ ____ ____, a process through which T cells mature and differentiate into immunocompetent T cells

A

thymic cell education

38
Q

the function of the SPLEEN is to filter and monitor _____ immunologically just as the lymph nodes monitor ____

A
  • blood

- lymph

39
Q

what two things does the spleen consist of?

A
  • red pulp

- white pulp

40
Q

the RED PULP of the spleen consists of blood-filled venous sinuses (splenic sinuses) surrounded by cords of splenic tissue called ____ ____, these consist of red blood cells, macrophages, lymphocytes, plasma cells, and granulocytes.

A

splenic (Billroth’s) cords

41
Q

the red pulp’s primary role is ____ ____

A

blood filtration

*removal of materials, antigens, and wornout/defective RBCs, WBCs and platelets

42
Q

the WHITE pulp of the spleen is lymphatic tissue consisting mostly of lymphocytes that aggregate around branches of the _____ ____ creating a ____ ____ ___

A
  • splenic arteries (central arteries)

- periatrterial lymphatic sheaths (PALS)

43
Q

what is the main function of the white pulp of the spleen?

A

carry out immune functions similar to lymph nodes

Anatomy (S2)(Unit 3) (15 decks)

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