Lesson 4

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Author:
Olivia3
ID:
91936
Filename:
Lesson 4
Updated:
2011-06-24 14:03:09
Tags:
BiSci
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Description:
Lesson 4 key concepts
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  1. Produces collagen and elastin fibers
    fibroblast
  2. found in the lining of GI tract
    Microvilli
  3. support cell for nervous system
    Glial cell
  4. structural cell of epidermis
    Keratinocyte
  5. provides protection from UV light
    Melanocyte
  6. Which organ system is incorrectly matched with a primary function
    Endocrine system--digestion of nutrients
  7. List the four major types of simple epithelial tissue and give an example of each one.
    • Squamous: flat cells; ex. line air sacs of lungs and blood vessels
    • 2. Cuboidal: cube shaped cells; ex. line kidney tubules and ducts; surface of ovaries
    • 3. Columnar: long, rectangular cells; ex. inner wall of digestive tract and uterus
    • 4. Glandular: secreted a product; can be single celled; ex. goblet cells in digestive tract or multi-celled; ex. liver, pancreas
  8. List at least five functional consequences of skin aging.
    • 1) reduced sensory perception
    • 2) reduced sweat and sebum production
    • 3) reduced immune responsiveness
    • 4) decreased epidermal turnover and repair
    • 5) reduced vascular activity

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