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Musculature of Esophagus

Musculature of Esophagus

Musculature of Esophagus .

– Inferior pharyngeal constrictor muscle

– pharyngeal raphe

– zone of sparse muscle fibers

– cricopharyngeus muscles part of inferior pharyngeal constrictor

– main longitudinal muscle bundle passing upward and ventrally to attach to middle of posterior surface of cricoid cartilage

– accessory muscle bundle from posterolateral surface of cricoid cartilage

– additional fibers from contralateral side of cricopharyngeus muscle part of inferior pharyngeal constrictor

– circular muscle layer with sparse longitudinal fibers in V-shaped area (Laimer)

– bare area on ventral surface of esophagus

– lateral mass of longitudinal muscle

– fibroelastic membranes with sparse muscle fibers

– window cut in longitudinal muscle layer

– circular muscle layer

– left main bronchus

– trachea

– cricoid cartilage

– thyroid cartilage

 

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