:ymphatics

Question 1

2 central lymphatic tissues

Answer 1

Bone marrow

Thymus

Question 2

Secondary Lymph tissues

Answer 2

MALT, Lymph nodes, spleen

Question 3

fate of B-cells

Answer 3

plasma cells or memory cells

Question 4

fate to T cells

Answer 4

cell mediated immune response or memory cells

Question 5

2 types of APC in lymphoid tissue

Answer 5

Macrophages, Dendritic cells

Question 6

Location of non-encapuslated lymphatic tissue

Answer 6

GI, respiratory, urinary tract

Question 7

presence of these in thymus indicate a problem

Answer 7

lymphatic nodules

Question 8

non encapsulated tissue in illium

Answer 8

Peyer’s patches

Question 9

function of non-encapsulated lymphatic tissues

Answer 9

trapping of antigen, lymphocyte production, destruction of antigen

Question 10

location of lymph node where afferent vessels are not present

Answer 10

hilum

Question 11

3 divisions of cortex

Answer 11

superificial, mid-cortex and deep cortex

Question 12

primary location of T-Cells in lymph node

Answer 12

deep cortex

Question 13

HEV

Answer 13

high endothelial venoule

Question 14

functions of lymph node

Answer 14

lymph filiter, lymphocyte production, antibody production

Question 15

cell origin of thymus

Answer 15

endoderm

Question 16

Horomone of thymus do this to T-cells

Answer 16

promote differentiaion and induce formation of T-cell surface markers

Question 17

mature T-cells exit the Thymus from this region through this venoule

Answer 17

Inner region, post capillary venoule

Question 18

Cell is definitive for the thymus

Answer 18

Hassall’s corpuscles

Question 19

vascular supply to thymus

Answer 19

internal thoracic and inferior thyroid arteries

Question 20

blood thymus barriers prevent these from entering the thymus

Answer 20

antigens

Question 21

The thymus and spleen do not have these types of vessels that the lymph nodes have

Answer 21

afferent lymphatic vessels

Question 22

Organ with the thickest capsule

Answer 22

spleen

Question 23

major component of white pulp of spleen

Answer 23

Pariarterial lymphatic sheaths (PALS)

Question 24

elongated and narrow endothelial cells, like a barrel in spleen

Answer 24

sinusoids

Question 25

most efficient APC

Answer 25

dendritic cell

Question 26

2 functions of spleen

Answer 26

immune - activation and proliferation of B and T lymphocytes - hemopoietic - remove damaged platelets, store blood