Anatomy Exam 2 Review

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Anonymous
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180143
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Anatomy Exam 2 Review
Updated:
2012-10-26 23:53:54
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anatomy
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Terms to remember for exam 2.
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  1. Tonofilaments
    • keratin intermediate filaments that make up tonofibrils 
    • found in stratum spinosum
  2. Langerhan’s cells
    • found in the stratum spinosum. 
    • These cells act as macrophages and engulf and digest pathogens.
  3. lamellated granules
    • found in the stratum granulosum. Contain glycolipids
    • which make the epidermis water-proof. 
  4. keratohyaline granules
    • found in the stratum granulosum.
    • contain the tough, insoluble protein, keratin, which makes the epidermis tough and abrasive-resistant.
  5. nucleosome
    the structural units of chromatin, packages chromatin
  6. What is a nucleotide made up of?
    • ·      A pentose sugar (deoxyribose or
    • ribose).

    ·      A nitrogen-containing base – A, G, C, T, or U

    ·      A phosphate group
  7. Coding Strand
    the other DNA strand not used in transcription. 
  8. Endothelium
    • simple squamous epithelium
    • lines blood vessels, circulatory system
  9. Mesothelium
    • serous membrane
    • Main purpose is to create a lubricating fluid that is released between layers.
  10. Apocrine Secretion
    • not found in humans, secretory product
    • accumulates on the apical side of the cell’s cytoplasm.
    • That part of the cytoplasm then pinches off, releasing the product into the lumen of the gland.
  11. Merocrine Secretion
    • cell secretes products via exocytosis
    • eccrine sweat glands (regular sweat)
    • apocrine sweat glands (yellowish, puberty)
  12. Holocrine Secretion
    • The cell accumulates secretory product within
    • its cytoplasm.  
    • The cell then dies and its products are released into the lumen.  
    • A new layer of cells are ready to take its place.
    • sebaceous oil glands
  13. Meissner's Corpuscles
    touch receptors found in the papillary layer
  14. epidermal ridges
    • fingerprints
    • increase friction and gripping power
    • we leave behind fingerprints because a film of sweat is left behind by the ridges.
  15. What tissue is the reticular layer made of? 
    What is housed here?
    • dense irregular connective tissue
    • touch receptors for deep pressure (Pacinian corpuscles)
    • stretch marks
  16. Merkel Discs
    • found at the junction of the epidermis and dermis.
    • acts as light touch receptors
  17. What are functions of the skin?
    • protection from infection
    • protection from UV radiation (melanocytes)
    • temperature regulation
    • metabolism (synthesis of vitamin D)
    • receives stimuli from the environment
  18. Pacinian corpuscles
    • deep pressure receptors
    • found in reticular layer

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