Musculature of Esophagus Anatomy
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 muscle, Accessory muscle bundle from
posterolateral surface of cricoid
cartilage, Pharyngeal raphe, Hook.
