Question

How does transitional epithelium differ structurally from other stratified squamous epithelia?

Answer 1

Transitional epithelia, which make up the majority of stratified epithelia, can also extend and expand to increase the bladder's capacity for holding urine.

This tissue's ability to shield underlying tissue from abrasive and wearing pressures is demonstrated by the presence of several cell layers in it. The cells of the surface layer of a transitional epithelium may also be flat when stretched, similar to stratified squamous epithelium.

However, these two epithelia differ primarily in two ways. The stretched transitional epithelium contains significantly fewer cell layers than the stratified squamous epithelium in terms of the epithelial cells themselves, and the cells directly underneath have a tendency to be cuboidal rather than squamous.

Additionally, the interface between the stretched transitional epithelium and the connective tissue beneath appears stretched and flat rather than having the characteristic undulations found at the base of stratified squamous epithelium.

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