Electron microscopy in histology — Flashcards

Flashcard 1: In lymph nodes, _____ follicles are dense and dormant

Answer: primary

Flashcard 2: What cellular structure are mucus-secreting goblet cells (small intestine) and antibody-secreting plasma cells rich in? _____

Answer: Rough endoplasmic reticulum

Flashcard 3: Which type of leukocyte has a large, kidney shaped nucleus with a "frosted glass" cytoplasm? _____

Answer: Monocyte

Flashcard 4: The intermediate filament Vimentin is found in _____ tissue

Answer: mesenchymal

Flashcard 5: The intermediate filament Neurofilament is found in _____

Answer: neurons

Flashcard 6: Which class of cells have a round, densely stained nucleus with a small amount of cytoplasm? _____

Answer: Lymphocytes (e.g. B cells, T cells, NK cells)

Flashcard 7: What form of chromatin appears lighter on EM? _____

Answer: Euchromatin

Flashcard 8: Embryological origin of the dermis?

Answer: Mesoderm (and Neural Crest) :: mostly derived from Mesoderm (lateral plate and paraxial), but facial dermis is from Neural Crest.

Extra: The dermis has a dual origin: 1. Paraxial mesoderm (dermatome): Dermis of the back. 2. Lateral plate mesoderm: Dermis of the ventral body wall and limbs. 3. Neural crest cells: Dermis of the face and anterior neck.

Flashcard 9: What organelles are stained with Nissl substance?

Answer: RER

Flashcard 10: What type of cytoskeletal element is most associated with cell structure?

Answer: intermediate filaments