Esophagus & Stomach Histology
Advanced Anatomy & Physiology
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Digestive System Anatomy & Histology
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Histology
Q. The longitudinal layer of the muscularis externa in the middle region of the esophagus comprises:
a
Skeletal muscle fibers
b
Smooth muscle fibers
c
An equal combination of both skeletal and smooth muscle fibers
d
Squamous epithelia
e
None of the above
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