Multiple choice

Which epithelium forms a barrier between the lumen and the blood stream?

  1. Stratified squamous epithelium

  2. Stratified columnar epithelium

  3. Transitional epithelium

  4. Stratified cuboidal epithelium

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transitional epithelium functions as a barrier between the lumen, or inside hollow space, of the tract that it lines and the blood stream.