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Lumen

A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x

Lumen of trachea <p>A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x</p>

Lumen of trachea

A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x

Lumen of esophagus <p>A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x</p>

Lumen of esophagus

A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x

Lumen of small intestine <p>A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x</p>

Lumen of small intestine

A lumen is the cavity or channel within a hollow organ.  A lumen may have a smooth periphery or may be undulating or infolded, depending on the configuration of the wall of the organ to which it belongs.  4x, 10x