Title: Congestion of lymphatic capillaries
(A): Lymphatic vessel (connective tissue skin), resorcin-fuchsin, light green staining, human. Dilated lymphatic vessel (1); small artery (2); arteriole (3). Clustered three capillaries (4).
(B): Strongly dilated lymphatic capillary due to congestion (serosa duodenum), frozen section, HE stained, pig. (1) Lumen of lymphatic capillary with valves (arrow 3). Muscular artery (2). Nerve fibers (4). Lymphatic capillaries are often found collapsed in connective tissue, however in cases of congestion they are balloon-like dilated.
Background: The functions of the lymphatic system comprises: 1. providing for the surplus of interstitial tissue fluid a route back to the blood circulation. 2. Absorbing and transporting chyle (with fatty acids and lipids) from the digestive tube. 3. Transporting leukocytes between lymph nodes. 4. Carrying forward antigen-presenting cells (APC) e.g. dendritic cells toward immune-response stimulated lymph nodes.
Keywords/Mesh: cardiovascular system, vascularisation, lymphatic system, lymphatic, capillary, valve, lymph, interstitial fluid, muscular artery, histology, POJA collection