SI Lec - Lymphatic System Flashcards Preview

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Flashcards in SI Lec - Lymphatic System Deck (70):
1

lymphatic system consists of

lymphatic vessels
lymphoid tissues
lymphoid organs

2

– activation of immune cells

lymphoid organs

3

counterpart of blood vessels; channels for lymph fluid

lymphatic vessels

4

results if system blocked or surgically removed

Edema

5

Terminal points of veins and arteries

Lymph capillaries

6

Have one way minivalves allowing excess fluid to enter but not leave

Lymph capillaries

7

Picks up bacteria and viruses as well as proteins, electrolytes and fluid

Lymph capillaries

8


Absent from bone, bone marrow, teeth, CNS

Lymph capillaries

9

Lymph capillaries are absent from (4)

Bone, BM, CNS, teeth

10

Similar to blood vessels (3 layers), but thin & delicate

lymphatic collecting vessels

11

Superficial lymphatic collecting vessels in skin travel with ___

superficial veins

12

Deep lymphatic collecting vessels of trunk and digestive viscera travel with deep arteries

deep veins

13

pressure in lymphatic collecting vessels

very low

14

distinctive appearance of lymphatic collecting vessels seen in __

lymphangiography

15

Lymphatic collecting vessels
drain into

lymph nodes

16

type of lymphoid organ, for production and maturation of lymphocytes

primary lymphoid organs

17

type of lymphoid organ, for differentiation and activation of lymphocytes

secondary lymphoid organs

18

primary lymphoid organs

Bone Marrow
Thymus

19

secondary lymphoid organs

MALT (Mucosa Associated Lymphoid Tissue)
Tonsils
Appendix
CALT (Cutaneous Associated Lymphoid Tissue)

20

-standby areas for immunocompetent lymphocytes (waiting for Ag encounter)

secondary lymphoid organs

21

Largest tissue of the body

Bone marrow

22

Produce all blood cells

Bone marrow

23

total weight of BM

1300 - 1500 g (adult)

24

Main source of hematopoietic tissue

BM

25

Center for Ag-independent lymphopoeisis

BM

26

Give % of B, T, NK cells in peripheral blood

In peripheral blood , B cells= 20% T cells= 61-89%, NK cells=22%

27

Where T cells develop their identity

thymus

28

Small, flat, bilobed organ found in the thorax, right below the thyroid gland and overlying the heart

thymus

29

mass of thymus at birth

30 g

30

mass of thymus at puberty

35 g

31

region of thymus where surface Ags are acquired

CORTEX

32

region of thymus
where T lympho are released

Medulla

33

Where reproduction of lymphocytes occur (Ag dependent)

Secondary Lymphoid Organs

34

Largest secondary lymphoid organ

spleen

35

length of spleen in cm

12

36

weight of adult spleen

150 g

37

location of spleen

Upper-left quadrant of the abdomen

38

secondary lymphoid organ for large discriminating filter

spleen

39

secondary lymphoid organ for Pitting and culling

spleen

40

splenic tissue can be divided into

red pulp and white pulp

41

splenic tissue type which
destroys old RBCs; extravascular hemolysis (macrophage-mediated)

red pulp

42

splenic tissue type which contains the lymphoid tissue; for immunity

white pulp

43

PALS meaning

Periarteriolar Lymphoid Sheath

44

PALS contents

T cells

45

Primary follicles contents:

B cells

46

Marginal zones contents

dendritic cells (phagocytic or antigen-presenting cells)

47

eat cells with hidden Ag, unveil the Ag, and present it to lymphocytes.

Dendritic cells

48

superficial lymph nodes

cervical axillary inguinal

49

deep lymph nodes

tracheobronchial
aortix
iliac

50

drainage of Superior R 1/4 of body

right lymphatic duct

51

drainage of the rest of the body

thoracic duct

52

Central collecting points for lymph fluid from adjacent tissues

lymph nodes

53

main fxn of lymph nodes

Filtration and generation of B memory cells

54

Filtration and generation of B memory cells

lymph nodes

55

contents of cortex of lymph nodes

macrophages, B cells

56

primary follicle of lymph node cortex contains __

resting B cells

57

secondary follicle/germinal center of cortex contains __

Ag stimulated B-cells

58

Paracortex of lymph node contains

T cells, interdigitating cells/Ag-presenting cells

59

Medulla contains

T cells, B cells, MO, plasma cells

60

specialized MALT

Peyer’s patches

61

trap pathogens entering the respiratory and alimentary tracts

tonsils

62

once believed to be a vestigial organ

appendix

63

filter bacteria in digestive system

appendix

64

epidermis + lymphocytes

CALT

65

potential sites for contact wih Ag

Secondary lymphoid organs:

66

Aggregated lymphoid nodules

Peyer's patches

67

contains About 40 follicles, 1 cm wide

peyer's patches

68

found in the distal small intestine (ileum

peyer's patches

69

peyer's patches contains how many follicles and their width

About 40 follicles, 1 cm wide

70

peyer's patches found where

distal S.I. (ileum)

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