ANAT 216 Lecture Notes - Lecture 2: Splenic Vein, Red Pulp, Abdominal Cavity
28 Apr 2016
School
Department
Course
Professor
Document Summary
Collections of diffuse lymphatic tissue and lymphatic follicles or nodules. Along the path of the lymphatic vessels. In some areas we can find clusters called superficial lymph nodes: inguinal region, armpit area, neck, tonsils. Also, deep inguinal and iliac lymph nodes. Filters lymph: has macrophages (phagocytic cells, destroys and removes antigens. Role in immune response: activates immune system, lymphocytes are found here, antigens in lymph will be presented to the lymphocytes. Shape and size: 1 mm - 2. 5 cm, shaped like lima beans. Surrounded by a capsule of dense irregular ct: extensions of the ct are called trabeculae, penetrated into the lymph node, works to structurally divide the outer part of the lymph node into smaller compartments. Cortex: divided by trabeculae, structural framework is diffuse lymphatic tissue. Embedded within are lymphatic follicles: follicles (nodules) with germinal centers. Medulla: medullary cords: diffuse tissue continuation of the cortex.
