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