HLSC 2F95 Lecture Notes - Lecture 5: Sinoatrial Node, Vocal Folds, Thoracic Duct
Document Summary
Nodules: clusters in the tissues of cells: have direct exposure and contact to any antigen passing. Immunocompetent cells are part of the immue system: most significant part. Structured to encounter antegins to pathogens: divided by lymph and blood. Nodes: tiny organs/glands, lymphatics exposed to lymph. Spleen: immune cells are exposed to blood (blood filter) Reticular cells are found in thymus and lymph nodes found in the spleen. Of the body drains into the lymphatic system. On left side of the body above abdominal just before the ribcage. Lymphatic capillaries; continue to get larger and drain into the venous system (capillary fluid) Interstitial fluid lymph nodes venous system portal system (liver) Lymph nodes are the size of a lima bean. Sinocids: widening to collect blood connects to venous return. Blood flow through lymph: red pulp (fluid from rbc) Collection of lymphocytes, neutrophages, granuocytes, and arteries from peritubular sheets. Most lymph return to venous circulation by thoracic duct!
