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History of anatomy in the 17th and 18th centuries
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Lymphatic system, Lymphatic system - Lymphatic circulation, Lymphatic system - Primary lymphoid organs, Lymphatic system - Secondary lymphoid organs, History of anatomy in the 17th and 18th centuries, Lymph Node

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History of anatomy in the 17th and 18th centuries: Encyclopedia II - Lymphatic system - Lymphatic circulation

The lymphatic system acts as a secondary circulatory system. Unlike the circulatory system, the lymphatic system is not closed and has no central pump; the lymph moves slowly and under low pressure due mostly to the milking action of skeletal muscles. Like veins, lymph vessels have one-way valves and depend mainly on the movement of skeletal muscles to squeeze fluid through them. Rhythmic contraction of the vessel walls may also help draw fluid into the lymphatic capillaries. This fluid is then transported to progressively larger lymphatic v ...

The lymphatic system acts like a secondary circulatory system. Unlike the circulatory system, the lymphatic system is not closed and has no central pump; the lymph moves slowly and under low pressure due mostly to the milking action of skeletal muscles. Like veins, lymph vessels have one-way valves and depend mainly on the movement of skeletal muscles to squeeze fluid through them. Rhythmic contraction of the vessel walls may also help draw fluid into the lymphatic capillaries. This fluid is then transported to progressively larger lymphatic ...

The spleen, lymph nodes, and accessory lymphoid tissue are the secondary lymphoid organs. These organs contain a scaffolding that support circulating B- and T-lymphocytes and other immune cells like macrophages and dendritic cells. When micro-organisms invade the body or the body encounters other antigens (such as pollen), the antigens are transported from the tissue to the lymph. The lymph is carried in the lymph vessels to regional lymph nodes. In the lymph nodes, the macrophages and dendritic cells phagocytose the antigens, process them, ...

History of anatomy in the 17th and 18th centuries

A Wisdom Archive on History of anatomy in the 17th and 18th centuries

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