Cytology

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Across
  1. 2. __________ secretion is local transmission of signal to cells within diffusion distance.
  2. 6. Golden-brown pigment detected in macrophages that have phagocytosed red blood cells
  3. 8. stored in the smooth endoplasmic reticulum
  4. 10. Study of the integration of cells to form tissue and organs
  5. 11. Consists of organelles, inclusions, and cytoskeletal components enclosed in the cytosol
  6. 14. Often occurs at the periphery of the nucleus attached to the nuclear lamina and consists of condensed DNA
  7. 17. Makes up about half of the cell volume and contains water, ions, sugars, amino acids, nucleotides, etc.
  8. 18. Smallest unit of life
  9. 19. Spherical to oblong membrane-delimited organelles visible in the light microscope if stained with cytochemical methods or vital dyes.
  10. 21. seals off the upper part of the epithelial lining of the GI tract to prevent leakage of material from the lumen into the subepithelial space and vice versa.
  11. 22. step in cell cycle where DNA is replicated
  12. 25. Inclusions that appear light brown in the light microscope and are often seen close to the nucleus in aging cells.
  13. 26. accumulations of basophilic, well-developed rough endoplasmic reticulum in neurons
Down
  1. 1. White blood cells with round nucleus
  2. 3. Absent in smooth endoplasmic reticulum
  3. 4. Dissolved in light microscopic preparations leaving unstained areas in the cytoplasm
  4. 5. Hemidesmosomes connect cells to the ____________ membrane complex
  5. 7. Ingestion of solid particulate material by endocytosis
  6. 9. Prevents unordered mixing of different biochemical pathways and allows the cells to increase in size by ordered delivery of membrane-delimited molecules to their appropriate destinations
  7. 12. Uptake of fluid
  8. 13. Structures with negative molecular groups that bind positively charged (basic) dyes
  9. 15. Lightly stained area in nucleus with uncoiled DNA
  10. 16. Organelle that can be visualized by silver impregnation in light microscopic preparations
  11. 20. disklike, cell-to-cell contacts that are particularly well developed in the epidermis of the skin
  12. 23. Phase in mitosis where nucleoli disappear
  13. 24. Trilaminar structure in electron micrographs.
  14. 26. Absent in mature mammalian red blood cells