Mediastinum
Plate231
MusculatureofEsophagus
Thyroid
cartilage
Cricoid
cartilage
Left main
bronchus
Trachea
Inferior pharyngeal constrictor muscle
Circular muscle layer
Window cut in longitudinal muscle layer
Fibroelastic membranes
with sparse muscle fibers
Lateral mass of longitudinal muscle
Bare area on ventral surface of esophagus
Circular muscle layer with
sparse longitudinal fibers
in V-shaped area (of Laimer)
Additional fibers from contralateral
side of cricopharyngeus (muscle)
part of inferior pharyngeal
constrictor muscle
Main longitudinal muscle bundle
passing upward and ventrally to
attach to middle of posterior
surface of cricoid cartilage
Zone of sparse muscle fibers
Cricopharyngeus (muscle)
part of inferior pharyngeal
constrictor
Accessory muscle bundle from postero-
lateral surface of cricoid cartilage
Pharyngeal raphe
Hook
Posterolateral view
See±also±
Plates 67
,
±
70
±
