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What type of epithelial tissue is this?
Stratified squamous epithelium
(nonkeratinized) (from esophagus)
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What are the nine (9) types of Epithelial tissues?
- 1. Simple squamous epithelium - single layer, flattened cells
- 2. Simple cubodial epithelium - single layer, cube-shaped cells
- 3. Simple columnar epithelium - single layer, elongated cells
- 4. Pseudostratified columnar epithelium - single layer, elongated cells
- 5. Stratified squamous epithelium - many layers, top cells flattened
- 6. Stratified cubodial epithelium - 2 to 3 layers, cube-shaped cells
- 7. Stratified columnar epithelium - top layer of elongated cells, lower layers of cube-shaped cells
- 8. Transitional epithelium - many layers of cube-shaped and elongated cells9. Glandular epithelium - unicellular or multicellular
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Epithelium Tissue:
Describe Simple Squamous Epithelium.
- - single layer of flattened cells
- - nuclei is usually broad and thin
- - substances pass easily through
- - line air sacs
- - forms walls of capillaries
- - line blood vessels
- - line lymphatic vessels
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Epithelium Tissue:
Describe Simple Cuboidal Epithelium.
- - single layer of cube-shaped cells
- - centerally located spherical nuclei
- - lining kidney tubules
- - covers (surface) the overies
- - lines ducts of some glands (salivary, pancreas, liver)
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Epithelium Tissue:
Describe Simple Columnar Epithelium.
- - single layer of elongated cells
- - nuclei usually near the basement membrane
- - sometimes possess microvilli
- - often have goblet cells (flask-shaped grandular cells) = secrete a mucus (can see a little, maybe)
- - can be ciliated or noncilated
- - lines the uterus, stomach, intestines, portions of the digestive track
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Epithelium Tissue:
Describe Pseudostratified Columnar Epithelium.
- - single layer of elongated cells (appear stratified)
- - nuclei at two or more levels
- - appear striated- often have cilia
- - often have goblet cells
- - lines the respiratory passageways (trachea and bronchi)
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Epithelium Tissue:
Describe Stratified Squamous Epithelium.
- - many cell layers
- - top cells are flat
- - younger cells in the deeper layers (cell division occuring) are cuboidal or columnar
- - older cells nearest the free surface a flatened (pushed out there)
- - can accumulat keratin (dead, dead, dead) = as the older cells are pushed outward
- - outer layer of skin
- - line oral cavity, vagina, and anal canal
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Epithelium Tissue:
Describe Stratified Cubodial Epithelium.
(wasn't one on the lab report)
- - 2 to 3 layers
- - cube-shaped cells*
- - line ducts of mammary glands, sweat glands, salivary glands, and pancreas, (and only the
- developing portino of reproductive system)
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Epithelium Tissue:
Describe Stratified Columnar Epithelium.
(wasn't one on the lab report)
- - top layer of elongated cells
- - lower layers of cube-shaped cells
- - line part of male urethea and part of pharynx
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Epithelium Tissue:
Describe Transitional Epithelium.
- - many cell layers elongated and cube-shaped irregular cells
- - (remember: microscope) the long underlying conective tissue is distincitive
- - lines the inner lining of the urinary bladder
- - lines the ureters, and part of urethra
- - form barrier, prevents content from going back into the system
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What type of connective tissue is this?
Areolar tissue
(from fascia between muscles)
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What type of connective tissue is this?
Adipose tissue
(from subcutaneous layer)
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What type of connective tissue is this?
Reticular connective tissue
(from spleen)
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What type of connective tissue is this?
Dense regular connective tissue
(from tendon)
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What type of connective tissue is this?
Elastic connective tissue
(from artery wall)
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What type of connective tissue is this?
Hyaline cartilage
(from coastal cartilage of ribs)
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What type of connective tissue is this?
Elastic cartilage
(from ear)
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What type of connective tissue is this?
Fibrocartilage
(from intervetebral discs)
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