lymphoid images

Question 1

Answer 1

B is incorrect–> bone marrow is not a secondary lymphoid organ

Question 2

Answer 2

C is incorrect it does not provide an environment that promotes immune cell-antigen interaction

Question 3

Answer 3

Hassall’s corpuscle

Question 4

Answer 4

c- epithelioreticular cells –> spleen

Question 5

Answer 5

Thymus medulla

You can find t-lymphocytes or thymocytes in the circle

Question 6

Answer 6

epithelial lining of an internal organ plus the lamina propria and the smooth muscle layer just deep to it

Question 7

Answer 7

all are correct!

Question 8

Answer 8

Palatine tonsil

look a the crypts at the asterick and the SSNKE lining the epithelium

Question 9

Answer 9

contains many dividing B-lymphocytes

Question 10

Answer 10

Macrophages and it is the pharyngeal tonsil look at the columnar epithelium

Question 11

Answer 11

C is incorrect the M-cells are not abundant at the arrows

Question 12

Answer 12

c is incorrect this is not microvillar apical surface

Question 13

Answer 13

it depicts a tonsil

Question 14

Answer 14

Humoral immunity involves the production of antibodies made by the Plasma cells

Question 15

Answer 15

medullary sinuses

Question 16

Answer 16

splenic sinuses are not visible

Question 17

Answer 17

Question 18

Answer 18

d- high endothelial venule

Question 19

Answer 19

Question 20

Answer 20

c incorrect- a paracortical reaction involves increased influx of lymphocytes through afferent lymphatics

Question 21

Answer 21

lymph node

Question 22

Answer 22

c- trabecular artery

a: smooth muscle
b: dense irregular CT

Question 23

Answer 23

Question 24

Answer 24

marginal zone

Question 25

Answer 25

incorrect- antigen-immune cell interactions in the spleen first occur in the red pulp sinuses

Question 26

Answer 26

HEVS are not present

Question 27

Answer 27

incorrect: blood enters at “1” before “2”

Question 28

Answer 28

incorrect: PALS- B lymphocytes

Question 29

Answer 29

Spleen