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Lymphatic Vessels - Anatomy & Physiology (view source)
Revision as of 16:22, 3 January 2023
, 16:22, 3 January 2023no edit summary
==Introduction==
==Introduction==
<p>Lymphatic vessels are part of the [[Lymphatic System - Anatomy & Physiology|lymphatic system]] and transport lymph.</p>
[[Image:Deep Lymphatic Drainage Diagram.jpg|right|thumb|200px|Deep Lymphatic drainage - Copyright B.Catchpole RVC]]
<p>Lymphatic vessels are part of the [[Lymphatic System Overview - Anatomy & Physiology|lymphatic system]] and transport [[Lymph - Anatomy & Physiology|lymph]].</p>
==Development==
==Development==
<p>The lymphatic system develops after the [[Vascular Development - Anatomy & Physiology|circulatory system]] and similarly to blood vessels, lymphatic vessels develop from mesoderm via [[Vascular Development - Anatomy & Physiology#Angiogenesis|angio]] & [[Vascular Development - Anatomy & Physiology#Vasculogenesis|vasculogenesis]]. </p>
<p>The lymphatic system develops after the [[Vascular Development - Anatomy & Physiology|circulatory system]] and similarly to blood vessels, lymphatic vessels develop from mesoderm via [[Vascular Development - Anatomy & Physiology#Angiogenesis|angio]] & [[Vascular Development - Anatomy & Physiology#Vasculogenesis|vasculogenesis]]. </p>
<p>The smaller vessels generally travel with blood vessels and nerves. Valves in the vessels prevent back flow and keep the flow of lymph unidirectional. As there is no central pump the movement of lymph is largely dependant on skeletal muscular activity.</p>
<p>The smaller vessels generally travel with blood vessels and nerves. Valves in the vessels prevent back flow and keep the flow of lymph unidirectional. As there is no central pump the movement of lymph is largely dependant on skeletal muscular activity.</p>
===Tracheal duct===
===Tracheal duct===
<p>The tracheal ducts are paired and originate from the retropharyngeal nodes (except horse) of the head. They run along the trachea before emptying into the thoracic and right lymphatic ducts or may empty directly into the jugular veins.</p>
<p>The tracheal ducts are paired and originate from the retropharyngeal nodes (except horse) of the head. They run along the trachea before emptying into the thoracic and right lymphatic ducts or may empty directly into the jugular veins.</p>
===Thoracic duct===
===Thoracic duct===
<p>Originating from the cistern chyli it passes through the aortic hiatus, travelling cranially through the mediastinum and along the left side of the trachea until it empties into the cranial vena cava or commonly the left jugular vein.</p>
<p>Originating from the cistern chyli it passes through the aortic hiatus, travelling cranially through the mediastinum and along the left side of the trachea until it empties into the cranial vena cava or commonly the left jugular vein.</p>
*The right tracheal duct receives lymph from the right head and neck and supplies lymph to the right brachicephalic vein
*The right tracheal duct receives lymph from the right head and neck and supplies lymph to the right brachicephalic vein
<big><center>[[Lymphatic System - Anatomy & Physiology|'''BACK TO LYMPHATIC SYSTEM - ANATOMY & PHYSIOLOGY''']]</center></big>
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{{Jim Bee 2007}}
[[Category:Lymphoreticular System]]