Questions

#115 Gall bladder, H&E

Why are the microvilli not visible on all cells lining the lumen?

QUESTIONS

  1. What are serial sections and why are they important?
  2. What is the relationship between heterochromatin and the synthetic activity of DNA? What is the significance of the nuclear staining patterns that are described as euchromatic and heterochromatic?
  3. What is the site of synthesis of ribosomal RNA?
  4. What is the function of mitochondrial cristae?
  5. What is the functional significance of the Golgi complex?
  6. How many membranes comprise the nuclear envelope? The wall of a mitochondrion?
  7. What are the cytological and functional differences between cilia and microvilli?
  8. Know the structural characteristics and functional significance of the following organelles and inclusions: nucleus, nucleolus, ribosomes, endoplasmic reticulum (two types), mitochondria, Golgi apparatus, lysosomes, microtubules, cilia, microvilli, glycogen, lipid, peroxisomes. Which of these require more than pure light microscopy for their identification? What additional techniques can be used?
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