Epithelial Tissue

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Author:
earthfire2
ID:
105844
Filename:
Epithelial Tissue
Updated:
2011-10-03 00:45:47
Tags:
Epithelial Tissue
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Description:
Anatomy and Physiology 1 Lab Practical Exam
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  1. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • Simple Squamous
    • Diffusion, filtration, secretion
    • Alveoli of lungs, endothelium of blood vessels, lymphatic vessels, body cavities (as part of mesothelium), parietal layer of Bowman capsule
    • Single layer of squamous cells
    • Looks like pancake from side, looks like fried egg from above


  2. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • Simple Cuboidal
    • Secretion and absorption
    • Kidney tubules, ducts of some glands, lens of the eye
    • Apical (free) surface - facing lumen
    • Clear, visible lumen in center of ring (kidney tubules)


  3. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • Simple Columnar (nonciliated)
    • Secretion, absorption
    • Majority of GI tract - Small intestine
    • Goblet cell
    • Goblet cells are specialized columnar cells which produce mucous


  4. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • PSCCE: PseudoStratified Ciliated Columnar Epithelial
    • Secretion, ciliary action
    • Upper respiratory tract (trachea, bronchi)
    • Cilia
    • Unique- not true stratified, CILIA, and note the hyaline cartilage underneath the basement menbrane at bottom of field


  5. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • Stratified Squamous (Keratinized)
    • Protection, lining
    • Epidermis of skin
    • Dead keratinized cells on the apical (free) surface
    • Keratin is a water insoluble protein, and dead keratinized cells appear as wavy lines on the apical (free) surface


  6. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • Stratified Squamous (Nonkeratinized)
    • Protection, lining
    • Lining of mouth, esophagus, anal and vaginal canals
    • Visible squamous cells along the apical (free) surface
    • Note the adipose tissue underneath the basement membrane to the right


  7. What is it?
    What can it do?
    Where is it located?
    Pointer is on what?
    Anything else?
    • Transitional
    • Capable of distension (stretching)
    • Urinary bladder, ureter
    • Lumen (urine passing from kidney to urinary bladder)
    • Many cell shapes between basement membrane and apical (free) surface. Apical surface characterized by large plump, or "dome-shaped" cuboidal cells

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