HLS - Schematic/Chart - Lymphoid Tissues and Organs

Schematic/Chart: Lymphoid Tissues and Organs

Structural Features of the Lymphoid Organs

Structural Features of the Lymphoid Organs (from Lymphoid Tissues and Organs)

	Thymus	MALT* (Peyer's patches)	Tonsil (palatine)	Lymph node	Spleen
cortex and medulla	yes	no	no	yes	no
lymphoid nodules	no	yes	yes	yes	yes
capsule	yes	no	partial	yes	yes
cords and sinuses	no	no	no	yes	yes
lymphatic vessels	a few efferent only	efferent only	efferent only	afferent and efferent	only some efferent
HEV	no	yes	yes	yes	no
unique structures	Hassall's corpuscles	located in mucosa of ileum	located in invaginated mucosa	cortical nodules, subcapsular sinus	central arteries, red pulp

* MALT, mucosa-associated lymphoid tissue.

Vasculature of the Spleen (from Lymphoid Tissues and Organs)

Red and white frame indicates borders of red pulp and white pulp, respectively. Bold arrows indicate open circulation path, non-bold arrows indicate closed circulation path. Click on names to load labeled image. Be aware that the diagrammed red pulp and white pulp areas are not drawn in proper scale with respect to each other.

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