A pathologist views tissues (A and B) in a biopsy. She determines that the tissues are normal.
A - Stratified squamous epithelium
B - is crypts (without villi)
The presence of both of these tissues indicates that the sample was taken from the region of the junction between the (AIIMS Nov 2013)
|A||Anal canal and rectum|
|B||Esophagus and stomach|
|C||Skin of the face and mucous epithelium of the lip|
|D||Stomach and duodenum|
a. A and B show two distinctly different types of epithelium: stratified squamous epithelium of the anus (top panel) and crypts (without villi) of the rectum (lower panel).
b. The esophageal-cardiac junction also represents a junction between stratified squamous and simple columnar epithelium.