Describe the Muscular Layer of the Esophagus

Multiple Choice

Describe the muscular layer of the esophagus.

A) inner circular layer and outer longitudinal layer; superior third is skeletal muscle,middle third is mixed skeletal and smooth muscle,inferior third is smooth muscle
B) inner longitudinal layer and outer circular layer; superior third is skeletal muscle,middle third is mixed skeletal and smooth muscle,inferior third is smooth muscle
C) inner circular layer and outer longitudinal layer; superior third is smooth muscle,middle third is mixed skeletal and smooth muscle,inferior third is skeletal muscle
D) inner longitudinal layer and outer circular layer; superior third is smooth muscle,middle third is mixed skeletal and smooth muscle,inferior third is skeletal muscle
E) inner circular layer,middle oblique layer,outer longitudinal layer; inner layer is smooth muscle,middle oblique layer is mixed smooth and skeletal muscle,outer longitudinal layer is skeletal muscle