LYMPHATIC SYSTEM
• Lymphoid tissue, lymphoid nodule (follicle)
➢ Lymphoid organs:
Central thymus, (red bone marrow)
Peripheral lymph node
spleen
tonsils
mucosa-associated lymphoid
tissue /MALT)
➢ Lymphatic vessels
lymphoid nodule (follicle) in the intestinal mucosa
afferent lymphatics
capsula fibrosa
+ septum
sinus
subcapsularis
or marginalis
sinus corticales
around nodules
LYMPH NODE
cortex
paracortex
medulla
sinus medullares
around cords of Ly
lymh nodules /B-Ly
medullary cords /B-Ly
artery
vein
efferent lymphatic
H
I
L
U
M
/T-Ly
Lymph node
Lymph node – capsule, subcapsular (marginal) sinus, cortex
Lymph node – capsule, subcapsular (marginal) sinus, cortex
Lymph node – cortex, medulla
Spleen HE
Blood circulation in the spleen
Spleen (HE) – white and red pulp, trabeculae
Spleen (HE) – white and red pulp, central artery
Spleen (impregnation)
white pulp
white pulp
red pulp
Spleen (impregnation) – red pulp
Thymus - young (HE)
cortex
medulla
Thymus young – cortex and
medulla, Hassal´s corpuscles
Thymus in involution - missing cortex/medulla border
- lymph tissue replacement with CT + fat)
- Hassal‘s corpuscles
Lingual tonsil crypt
mucous glands (of Weber)
Palatine tonsil crypts
LYMPHATIC SYSTEM
Slides
66. Lymphonodus (HE)
67. Lien (HE)
68. Lien (impregnation)
57. Thymus - young (HE)
58. Thymus - in involution (HE)
4. Tonsilla lingualis (HE)
6. Tonsilla palatina (HE)