9. Immune System Flashcards
These bizarre epithelial structures are found in the medulla of the thymus.
Hassal’s corpuscles
These represent regions of stimulated lymphocytes. They are recognized by being relatively pale staining as compared to other lymphoid areas.
germinal centres
This immune organ is also the site of red blood cell destruction.
spleen
This is the part of a lymph node where blood vessels enter and leave and where the lymph drains.
Hilum
This is the part of the lymph node that is often the first place that one sees cancer cells and is the initial site of filtration for incoming lymph.
subcapsular sinus
this cell is an antigen presenting cell found on the surface of lymphoid agregates in the gut.
m cell
This immune organ is mainly T cell organ.
thymus
These lymphoid aggregates are mainly found in the ileum
peyers patches
This is an organ that contains both white and read pulp
spleen
This is the only kind of major immune gland covered by epithelium.
Tonsils
These provide direct access to lymph nodes for lymphocytes. They also provide direct access to the blood stream from lymph nodes.
High endothelial vessels
This immune system organ has crypts.
Tonsils
This immune organ undergoes age involution.
thymus
