A sphincter is a circular muscle that maintains constriction of a natural body orifice. Close-up of Pyloric sphincter. human stomach with Oesophagus and Duodenum

A sphincter is a circular muscle that maintains constriction of a natural body orifice. Close-up of Pyloric sphincter. human stomach with Oesophagus and Duodenum - 147310862

Imagens de estoque semelhantes (Vetor, SVG e EPS)

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