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Botany > SI Lec - Lymphatic System > Flashcards

SI Lec - Lymphatic System Flashcards

1
Q

lymphatic system consists of

A

lymphatic vessels
lymphoid tissues
lymphoid organs

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2
Q

– activation of immune cells

A

lymphoid organs

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3
Q

counterpart of blood vessels; channels for lymph fluid

A

lymphatic vessels

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4
Q

results if system blocked or surgically removed

A

Edema

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5
Q

Terminal points of veins and arteries

A

Lymph capillaries

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6
Q

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

A

Lymph capillaries

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7
Q

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

A

Lymph capillaries

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8
Q

Absent from bone, bone marrow, teeth, CNS

A

Lymph capillaries

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9
Q

Lymph capillaries are absent from (4)

A

Bone, BM, CNS, teeth

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10
Q

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

A

lymphatic collecting vessels

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11
Q

Superficial lymphatic collecting vessels in skin travel with ___

A

superficial veins

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12
Q

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

A

deep veins

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13
Q

pressure in lymphatic collecting vessels

A

very low

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14
Q

distinctive appearance of lymphatic collecting vessels seen in __

A

lymphangiography

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15
Q

Lymphatic collecting vessels

drain into

A

lymph nodes

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16
Q

type of lymphoid organ, for production and maturation of lymphocytes

A

primary lymphoid organs

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17
Q

type of lymphoid organ, for differentiation and activation of lymphocytes

A

secondary lymphoid organs

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18
Q

primary lymphoid organs

A

Bone Marrow

Thymus

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19
Q

secondary lymphoid organs

A

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

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20
Q

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

A

secondary lymphoid organs

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21
Q

Largest tissue of the body

A

Bone marrow

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22
Q

Produce all blood cells

A

Bone marrow

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23
Q

total weight of BM

A

1300 - 1500 g (adult)

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24
Q

Main source of hematopoietic tissue

A

BM

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25
Q

Center for Ag-independent lymphopoeisis

A

BM

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26
Q

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

A

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

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27
Q

Where T cells develop their identity

A

thymus

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28
Q

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

A

thymus

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29
Q

mass of thymus at birth

A

30 g

30
Q

mass of thymus at puberty

A

35 g

31
Q

region of thymus where surface Ags are acquired

A

CORTEX

32
Q

region of thymus

where T lympho are released

A

Medulla

33
Q

Where reproduction of lymphocytes occur (Ag dependent)

A

Secondary Lymphoid Organs

34
Q

Largest secondary lymphoid organ

A

spleen

35
Q

length of spleen in cm

A

12

36
Q

weight of adult spleen

A

150 g

37
Q

location of spleen

A

Upper-left quadrant of the abdomen

38
Q

secondary lymphoid organ for large discriminating filter

A

spleen

39
Q

secondary lymphoid organ for Pitting and culling

A

spleen

40
Q

splenic tissue can be divided into

A

red pulp and white pulp

41
Q

splenic tissue type which

destroys old RBCs; extravascular hemolysis (macrophage-mediated)

A

red pulp

42
Q

splenic tissue type which contains the lymphoid tissue; for immunity

A

white pulp

43
Q

PALS meaning

A

Periarteriolar Lymphoid Sheath

44
Q

PALS contents

A

T cells

45
Q

Primary follicles contents:

A

B cells

46
Q

Marginal zones contents

A

dendritic cells (phagocytic or antigen-presenting cells)

47
Q

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

A

Dendritic cells

48
Q

superficial lymph nodes

A

cervical axillary inguinal

49
Q

deep lymph nodes

A

tracheobronchial
aortix
iliac

50
Q

drainage of Superior R 1/4 of body

A

right lymphatic duct

51
Q

drainage of the rest of the body

A

thoracic duct

52
Q

Central collecting points for lymph fluid from adjacent tissues

A

lymph nodes

53
Q

main fxn of lymph nodes

A

Filtration and generation of B memory cells

54
Q

Filtration and generation of B memory cells

A

lymph nodes

55
Q

contents of cortex of lymph nodes

A

macrophages, B cells

56
Q

primary follicle of lymph node cortex contains __

A

resting B cells

57
Q

secondary follicle/germinal center of cortex contains __

A

Ag stimulated B-cells

58
Q

Paracortex of lymph node contains

A

T cells, interdigitating cells/Ag-presenting cells

59
Q

Medulla contains

A

T cells, B cells, MO, plasma cells

60
Q

specialized MALT

A

Peyer’s patches

61
Q

trap pathogens entering the respiratory and alimentary tracts

A

tonsils

62
Q

once believed to be a vestigial organ

A

appendix

63
Q

filter bacteria in digestive system

A

appendix

64
Q

epidermis + lymphocytes

A

CALT

65
Q

potential sites for contact wih Ag

A

Secondary lymphoid organs:

66
Q

Aggregated lymphoid nodules

A

Peyer’s patches

67
Q

contains About 40 follicles, 1 cm wide

A

peyer’s patches

68
Q

found in the distal small intestine (ileum

A

peyer’s patches

69
Q

peyer’s patches contains how many follicles and their width

A

About 40 follicles, 1 cm wide

70
Q

peyer’s patches found where

A

distal S.I. (ileum)

Botany (324 decks)

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