Non-capsulated Lymphoid Tissue

Question 1

Diffuse

Answer 1

Diffuse scattering of lymphoid cells deep to the epithelium in the connective tissue

Gastrointestinal tract, genitourinary tract, respiratory passages

Question 2

Single Nodular Tissue- Primary

Answer 2

More infrequent than secondary
Only small lymphocytes
No germinal center

Question 3

Single Nodular Tissue- Secondary

Answer 3

More frequent
Germinal center- Possesses cluster of lymphoblasts
Outer ring (Mantle zone)- smaller lymphocytes and memory cells

Question 4

Pharyngeal Tonsil

Answer 4

Germinal center

pseudostratified columnar ciliated epithelium

Question 5

Palatine tonsil

Answer 5

Germinal centers
Stratified squamous epithelium
Thick partial connective tissue capsule
Germinal centers
10-15 crypts

Question 6

Lingual tonsil

Answer 6

Stratified squamous epithelium
No capsule
Germinal centers
One crypt per tonsil

Question 7

Mucosa- Associated Lymphoid Tissue (MALT)

Answer 7

Single or clusters of lymphoid nodules

GI tract, respiratory passageways, Urinary tract

Question 8

Gut-Associated Lymphoid Tissue (GALT)

Answer 8

In ileum- Peyer’s Patches
Abundance of villi
Single or clusters of nodules
Simple columnar epithelium with Goblet cells

Question 9

Appendix GALT

Answer 9

No villi

Characterized by crypts

Question 10

Primary Lymphoid organs

Answer 10

Bone marrow and Thymus