Histology Lab

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simple squamous epithelium
simple squamous epithelium
simple cuboidal epithelium
simple columnar epithelium

Tip: Dark band along apical edge= microvilli (increase surface area for absorption)
pseudostratified columnar epithelium

Tip: All cells reach to basement layer, but not all reach apical layer. Nuclei @ varying distances from apical border. Falsley stratified. Indentations are called goblet cells, and they secrete mucous into lumen (open area). Notice banding--this is the microvilli that is found in columnar epithelial cells.
keratinized stratified squamous epithelium

Tip: Can tell it is keratinized because of distinct layers. There are 5 OBVIOUS layers. Covers outer surfaces of body-- i.e. skin.
Keratinized stratified squamous epithelium
- a) corneum
- b) lucidum
- c) granulosum
- d) spinosum
- e) basal
Keratinized Stratified Squamous Epithelium
Transitional Epithelium

Tip: The circles are on the binucleated cells, which are characteristic of transitional epithelium. The test pointer will likely be right on a binucleated cells.
Loose connective tissue
- Tissue: Distinctive purple dots with fibers going in all different directions
Dense regular connective tissue
Dense irregular connective tissue