Lymphoid Organs

What are the functions of the lymphatic system

Tissue drainage, absorption in small intestine, immunity

How does the lymphatic system aid in nutrient absorption

Absorb lipids and lipid soluble vitamins, chyle is formed by the formation of triglycerides and lipids

What is the function of the thymus

Development of T lymphocytes and self tolerance, secretion of polypeptides and hormones

TEC in the cortex

What are Hassall corpuscles

Large aggregates of TEC in the medulla

What is the function of Hassell corpuscles

Secretion of cytokine for development of T reg

H = Hassell corpuscle

What is found in the red pulp of the spleen

Splenic sinusoid that have stave cells, splenic cords that have macrophages and blood cells

What is in the white pulp of the spleen

Central arteriole enclosed by PALS

How does lymph circulate

Afferent lymphatic vessels → Sinus → Efferent lymphatic vessel

What is in the primary follicle

Resting B cell

What is in the secondary follicle

Activated B cells

What are MALT

Tissue in GI, respiratory and urinary tract such as tonsil and Peyer’s patches