Epithelial Tissues Histology

📋 Course Outline

1. Glandular Architecture and Cell Types
2. Glandular Secretion Modes
3. Epithelial Surface Specializations
4. Epithelial Types and Functions
5. Cell Adhesion and Junctions
6. Basal Lamina Functions
7. Histological Sample Preparation
8. Epithelial Organization and Renewal

📖 1. Glandular Architecture and Cell Types

🔑 Key Concepts & Definitions

• Tubular gland : A tubular gland has a secretory portion organized as a tube, which may be simple straight, branched straight, or simple convoluted; examples include colonic glands, gastric fundic glands, and sweat glands.
• Acinar gland : An acinar gland has spherical functional units with narrow lumina, and its acini are assembled in grape-like clusters.
• Serous cell : A serous cell produces a fluid, protein-rich secretion with an enzymatic role, synthesized as proenzymes, and has abundant rough endoplasmic reticulum and small apical secretory vesicles.

📌 Exocrine glands release their products onto an epithelial surface or through an excretory duct, whereas endocrine glands release their products directly into the blood.