Epithelium
Terms
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- Where are epithelial cells derived from?
- Endoderm, mesoderm, ectoderm
- How does epithelial tissue get nutrients?
- It is avascular, so it must diffuse nutrients and waste through basal lamina
- What is the mesothelium?
- Lines pleural, pericadrdial, and peritonial cavities.
- What is the endothelium?
- Cells that line the lumen of blood and lymphatic vessels
- What is an example of simple cuboidal epithelium?
- Kidney tubules
- What is an example of a simple columnar epithelium?
- Digestive tract.
- What is an example of a stratified cuboidal epithelium?
- Ducts of sweat glands
- What is an example of a pseudostratified epithelium?
- Respiratory epithelium!
- What is an example of transitional epithelium?
- Urinary tract/bladder: TRANSITIONS in shape upon diestension
- What are microvilli?
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- Cytoplasmic projections at apical surface for surface area.
- ACTIN filaments - What are cilia?
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- Motile hair-like projections
- Microtubules - What organelles are found at the BASAL end of the cell?
- - Nucleus, RER, mitochondria
- What organelles are found at the APICAL end of the cell?
- - Golgi apparatus, secretory vesicles