LTH II histo II lymph nodes

Question 1

Lymph nodes =

Answer 1

• smallest, most numerous lymphoid organs
• in line filters of lymph
  a. removes antigens and cellular debris
  b. produces lymphocytes
  c. adds antibodies

Question 2

Trabeculae extend into the

Answer 2

parenchyma between cortical nodules

Question 3

general organization

Answer 3

outer cortex, inner medulla, hilum

Question 4

Cortex

Answer 4

Outer cortex: B cell rich

i. Lymphatic nodule 
        a. mantle 
        b. germinal center    ii. subcapsular/cortical sinus 

Inner cortex: T cell rich

Question 5

Medullary cords

Answer 5

mostly comprised of plasma cells and macrophages

Question 6

medullary sinuses

Answer 6

spaces lined by endothelial cells, reticular cells, and macrophages

Question 7

Medullary sinuses do what? what makes them up?

Answer 7

-filter and direct lymph
- slows lymph flow in order to better clean it
- it’s made from a mesh of reticular cells/fibers
macrophages, follicular dendritic cells

Question 8

how much of the lymph of is cleaned after being processed by the spleen

Answer 8

90%