ANAT 216 Lecture Notes - Lecture 3: Red Pulp, Blood Vessel, Epithelium
13 Oct 2016
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Anatomy 216 (reading material: chapter 23: pages 617-624) Lymphoid organs (lymph nodes, thymus, spleen): diffuse lymphatic tissue and lymphatic follicles or nodules, enclosed by a connective tissue capsule. Along the path of the lymphatic vessels. Inguinal region (top of thigh: function filters lymph. Diffuse lymphatic tissue: has lymphatic follicles. Medullary cords* irregular in shape and vary in sizes: extends from cortex to medulla. Has t cells in area merging from cortex to medulla. Extensions extend into node: called trabeculae, work to divide node into different compartments. Contains b cells and plasma cells inner portion. Subcapsular sinus: reticular connective tissue, macrophages, dendritic cells. Cleans" by 99% trabeculae can be called trabeculae sinus or cortical sinus then medullary sinus then merge into efferent vessels so lymph can leave. Movement: enters convex side through several afferent lymphatic vessels through subscapular sinus through cortical sinus through medullary sinus through hilum, fewer lymphatic vessels exit, circulation within and through a lymph node:
