BIOM 3200 Lecture Notes - Lecture 7: Peristalsis, Adipose Tissue, Red Blood Cell

• School: University of Guelph
• Department: Biomedical Sciences
• Course: BIOM 3200
• Professor: N.Campbell

Document Summary

Fluid can easily enter the lymphaic capillaries because their walls are made up of endothelial cells. Once in the capillaries lymph luid is returned to the systemic circulatory system. First lymph capillaries merge into larger lymph ducts, which use peristalsis to move the luid and have valves to prevent backlow. The smooth muscle within lymph ducts contains a pacemaker that iniiates muscle contracion when the lymph duct is stretched (ie. contains a lot of luid). The lymph ducts merge with one of two principal vessels: the thoracic duct or the right lymphaic duct. Both of these ducts drain the lymph into the subclavian veins and thus return lymph luid back to the systemic circulatory system. Along the pathway, lymph ducts (or vessels) pass through lymph nodes. Lymph nodes contain phagocytes which remove pathogens and clean the luid before it passes into the systemic system: the lymphaic system uses lymph luid as a media for its transportaion funcion.