淋巴系統(tǒng)解剖ppt課件-資料下載頁(yè)
2025-01-05 12:59本頁(yè)面
【正文】 oracic lymph nodes drain thoracic viscera Abdominal lymph nodes drain pelvic region Intestinal and mesenteric lymph nodes drain abdominal viscera Thymus Location above heart, posterior to sternum Divided into lobules Only lymphoid an that does NOT fight antigens, it functions as “Tcell academy” Blood thymus barrier prevents premature stimulation of developing Tcells Involution after puberty Epithelial cells produce thymic hormones Largest lymphoid an Soft and very blood rich Red pulp sinusoids containing RBCs white pulp lymphoid tissue Major Functions: 1. Initiation of Immune response to antigens in blood 2. Removal of aged and defective RBCs 3. Repository for new RBCs 4. Fe salvaging, storage and recycling Spleen Fig 2317 Surfaces named for contacts: diaphragmatic, visceral, gastric, renal
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