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Recto-anal junctions

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Recto-anal junction <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Recto-anal junction

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Region of junction with anus <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Region of junction with anus

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Rectum <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Rectum

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Anal canal <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Anal canal

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Anus <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Anus

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Simple columnar epithelium with goblet cells <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Simple columnar epithelium with goblet cells

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Stratified squamous moist epithelium <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Stratified squamous moist epithelium

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x

Stratified squamous, keratinized (dry) epithelium <p>These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x</p>

Stratified squamous, keratinized (dry) epithelium

These images compare the recto-anal junction (left) with the junction of the anal canal with the anus (right).  For the recto-anal junction, the transition from simple columnar epithelium with goblet cells of the rectum to the stratified squamous moist epithelium of the anal canal is abrupt.  The junction of the anal canal with the anus, lined by a keratinized stratified squamous epithelium, is a bit more gradual.  400x