Anatomy & Physiology

TISSUES (Part 2)
EPITHELIAL TISSUES
DEFINITION: Tissues that develop in broad sheets
Images (Del.)

• SURFACE EPITHELIA (remaining in sheets;
  function in protection/absorption/secretion):
  • SIMPLE EPITHELIA (a single layer of cells)
    • Simple, squamous epithelium (flat cells)
    • Simple, cuboidal epithelium (cuboidal cells)
    • Simple, columnar epithelium, nonciliated
    • Simple, columnar epithelium, ciliated
    • Pseudostratified epithelium
  • STRATIFIED EPITHELIA (multiple layers of cells)
    • Stratified squamous epithelium, non-keratinizing (moist surface)
    • Stratified squamous epithelium, keratinizing (dry surface)
    • Stratified cuboidal epithelium
    • Transitional epithelium (able to stretch)
    • Stratified columnar epithelium, nonciliated
    • Stratified columnar epithelium, ciliated
• GLANDULAR EPITHELIA (specialized for secretion only)
  • EXOCRINE GLANDS
    • Simple tubular
    • Simple acinar
    • Compound tubular
    • Compound acinar
    • Compound tubuloacinar (mixed)
  • ENDOCRINE GLANDS
    • Cord-and-clump type
    • Follicular type

rev. Aug. 2010