Question

Check all of the statements regarding epithelial structure and function that are true. rev: 09_20_2017_qc_cs-101572 simple squamous epithelium allows for rapid diffusion. the keratin present on simple cuboidal epithelium protects from water loss. the microvilli on simple columnar epithelium helps to maximize absorption. the keratin on the esophageal stratified squamous epithelium helps to moisten the lumenal surface for swallowing. transitional epithelium of the urinary bladder can change shape to accommodate bladder wall stretching.

Answer 1

"Simple squamous epithelium allows for rapid diffusion" 

This statement is true as the substance for diffusion will not have to pass many layers of cells and membranes. 

 "The keratin present on simple cuboidal epithelium protects from water loss"

This is false as keratin is usually present on stratified squamous epithelium and usually found on skin.

"The microvilli on simple columnar epithelium helps to maximize absorption"

This is true as microvilli will increase the cell's surface area and having an increased surface area will also increase the absorption.

"The keratin on the esophageal stratified squamous epithelium helps to moisten the luminal surface for swallowing"

This is false as there is no keratin in esophageal stratified squamous epithelium. 

"Transitional epithelium of the urinary bladder can change shape to accommodate bladder wall stretching"

This is true as the word itself mean, transitional epithelium transitions from stratified cuboidal epithelium to simple cuboidal epithelium in response to bladder filling.