Histo Lecture 1&2

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Histo Lecture 1&2
2010-09-26 11:07:10

Notecards for Lecture 1
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  1. Blood clotting and childbirth are examples of _______ feedback.
  2. ______ feedback is the most common homeostatic mechanism
  3. Contains all the carbohydrates, proteins, lipids, and amino acids within the cell.
    Intracellular fluid
  4. Intracellular fluid helps maintain high ________ and low ________ concentration
    potassium; sodium
  5. Extracellular fluid can be divided into these three groups:
    Interstitial flud, plasma, transcellular fluid
  6. ______ helps control the viscosity of a cell.
  7. Integral proteins serve three functions:
    • -As a channel or pore
    • -Carrier proteins
    • -Cell surface receptor
  8. Peripheral proteins function as an ________ catylyst to affect inracellular events
  9. Cell recognition is made possible by __________
  10. These carbohydrate structures on the surface of the cell can serve as receptors for binding hormones (e.g. insulin)
  11. Nucleoli is an accumulation of _____ and _____ within the nucleus
    RNA and ribosomoes
  12. Definition of chromatin
    Coiled strands of DNA, bound to proteins
  13. The main function of the endoplasmic reticulum is:
    the production of proteins and lipids for cellular use and for secretion
  14. The rough ER produces:
    Proteins for the cell and for secretion
  15. The smooth ER is responsible for:
    • -Steroid production
    • -membrane production
    • -Contains enzymes
    • -Stores calcium
  16. Synthesis of carbohydrates occurs in the:
    Golgi apparatus
  17. Acts as the packaging center
    golgi apparatus
  18. This part of the golgi apparatus accepts vesicles from the ER
    Cis face
  19. The trans face of the golgi appartus is responsible for this
    exporting vesicles
  20. The layer of the inner membrane of the mitochondria is called the _______
  21. Energy from ATP (adenosine triphosphate) is stored here
    The phosphate bonds
  22. Name at least 2 lysosome functions:
    • -Contains hydrolytic enzymes that are produced in the RER
    • -Are packaged in the golgi apparatus
    • -Responsible for digestion of intra/extracellular materials
    • -Exist in different "states" of activity
  23. Three types of lysosomes:
    • Primary
    • Phagosome
    • Secondary
  24. Type of lysosome that contains digestive enzymes only
    Primary enzyme
  25. Type of lysosome that is a vesicle of material taken into the cell from the environment
  26. A fusion of phagosome and primary lysosome where digestion of outside material occurs
    Secondary lysosome
  27. Filaments or tubulues that provide structural support yet may allow altering of shape, contractility, and movement
  28. This filament helps anchor the cytoskeleton and can provide some contraction
  29. Larger than microfilaments; Provide strength for cell shape and stabilize organelle positions
    Intermediate filaments
  30. Keratins, Vimentin, Desmin, Glial filaments, and neurofilaments are type of ________ filaments
    intermediate filaments
  31. -Main constituent of cilia
    -form mitotic spindles across chromosomes
    -Maintain shape
    -Participate in intracellular transport
  32. o -Largest of filaments
    -12-15mm in diameter
    -Interacts with actin to produce contractions