Epithelial Tissue

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    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
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    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)
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    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
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    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
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    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
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    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
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    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
Author
earthfire2
ID
105844
Card Set
Epithelial Tissue
Description
Anatomy and Physiology 1 Lab Practical Exam
Updated