ANP 1105 Chapter Notes - Chapter 5: Lymph Node, Extracellular Fluid, Loose Connective Tissue

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: William Staines

Document Summary

Lymphatic vessels (lymphatics): elaborate networks of drainage vessels that collect the excess protein-containing interstitial fluid and return it to the bloodstream: when interstitial fluid enters lymphatic vessels, its called lymph (clear water with no rbc"s) Lymphatic capillaries: transport of lymph begins here. Found in loose connective tissue of body: absent from bones, teeth, bone marrow, and entire cns (which drains into cerebrospinal fluid, very permeable (proteins, cell debris, pathogens, cancer cells). Endothelial cells forming walls not tightly joined but instead overlap each other loosely, forming one-way minivalves. Major trunks include: paired lumbar, bronchomediastinal, subclavian, and jugular trunks, as well as single intestinal trunk: lymph is delivered to one of two large ducts in thoracic region. Right lymphatic duct drains lymph from tight upper limb and right side of head and thorax. Thoracic duct is larger and receives lymph from the rest of the body (run superiorly so receives from left side of the head, thorax, and upper left limb).