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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
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