Purpose of the Exercise Review the characteristics of epithelial tissues and observe examples of each type.
Procedure 1. Complete Part A .
2. Use the microscope to observe the prepared slides of the types of epithelial tissues.
View under high power (400x). Compare your prepared slides to the micrographs at the front of the room. Note that some of the tissue colors may vary with the
stain. 3. Complete Part B. Make a sketch of each tissue and label the following: basement
membrane, nucleus, and any other distinguishing characteristic (goblet cell, cilia,
provided. (Some answers will be used more than once.)
___ 1. Consists of several layers of cube-shaped, elongated, and irregular cells.
___ 2. Commonly possesses cilia that move sex cells and mucus.
___ 3. Single layer of flattened cells.
___ 4. Nuclei located at different levels within cells.
___ 5. Forms walls of capillaries and air sacs (alveoli) of lungs.
___ 6. Forms linings of trachea and bronchi.
___ 7. Younger cells are cuboidal and older cells are flattened.
___ 8. Forms inner lining of urinary bladder.
___ 9. Lines kidney tubules and ducts of salivary glands.
___10. Forms lining of stomach and intestines.
___11. Nuclei located near basement membrane.
___12. Forms lining of oral cavity, anal canal, and vagina.
a. Simple squamous epithelium
b. Simple cuboidal epithelium
c. Simple columnar epithelium
d. Pseudostratified columnar epithelium
e. Stratified squamous epithelium
f. Transitional epithelium
Sketch each type of epithelial tissue in the spaces provided. Indicate their function and