When embedding tubular structures with a lumen, which orientation best reveals the lumen?

Study for the CAMLPR Histology Practice Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

When embedding tubular structures with a lumen, which orientation best reveals the lumen?

To clearly see the lumen, you want a cross-sectional view of the tube. When the tubular structure is embedded on end (standing upright), the microtome cuts across the lumen, producing a neat circular opening that’s easy to identify and measure. If the tube is embedded flat or diagonally, sections tend to run parallel or obliquely along the length, giving longitudinal or slit‑shaped views of the lumen instead of a clear cross-section. Standing it up thus yields the best visibility of the lumen in the tissue section.

To clearly see the lumen, you want a cross-sectional view of the tube. When the tubular structure is embedded on end (standing upright), the microtome cuts across the lumen, producing a neat circular opening that’s easy to identify and measure. If the tube is embedded flat or diagonally, sections tend to run parallel or obliquely along the length, giving longitudinal or slit‑shaped views of the lumen instead of a clear cross-section. Standing it up thus yields the best visibility of the lumen in the tissue section.

More practice questions