The esophagus has several variations from the standard plan of the gut tube.These include
A) epithelium of mucosa is stratified squamous.
B) epithelium of mucosa is simple columnar.
C) muscularis externa may be striated muscle.
D) epithelium of mucosa is stratified squamous and simple columnar.
E) epithelium of mucosa is simple columnar and muscularis externa may be striated muscle.
Correct Answer:
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