Epithelial tissue covers body surfaces, lines body cavities, and forms glands.
I. Functions
A. ProtectionB. Selective Absorption
C. Secretion
II. Features
A. Consists entirely of cellsB. Does not contain blood vessels
C. Capable of reproduction
III. Covering and Lining Epithelium
A. Simple1. Squamous2. Cuboidal
3. Columnar
4. Pseudostratified columnar
B. Stratified
1. Squamousa. Keratinizedb. Non-keratinized
(2. Cuboidal)
(3. Columnar)
4. Transitional
IV. Glandular Epithelium
A. Endocrine GlandsB. Exocrine Glands
1. Simplea. Tubularb. Alveolar
2. Compound
a. Tubularb. Alveolar
c. Tubuloalveolar
C. Methods of Secretion1. Merocrine2. Apocrine
3. Holocrine