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Junqueira's Basic Histology - Text and Atlas (12th Ed.).pdf - Google Drive.
Medical School Histology Basics Respiratory System. VIBS 243 lab. Larry Johnson. Texas A&M University. Objectives. The histologic characteristics of the components of conducting portion and respiratory portion of the respiratory system. How these characteristics allow each component to contribute to the overall function of the respiratory system.
Essential Human Histology is designed specifically to meet these requirements and, if used properly, will enable the student to master this knowledge quickly and efficiently. The subject matter is broken down into small learning units, each of which is introduced by a vocabulary appropriate to that unit. The
The Respiratory Epithelium Pseudostratified columnar ciliated epithelium. Lines most of the conducting zone of the respiratory system. Formed of 5 types of cells: 1. Ciliated columnar cells: The most common type with hundreds of cilia on its apical surface. They also possess microvilli. Fig.2: Cilia (C), and some microvilli (MV), on
Bronchus and bronchioles are present. Alveolar duct and alveoli-. -Simple squamous epithelium. Type 1 Pneumocytes(97%. -Blood Air barrier. Type2 Pneumocytes(2%) - pulmonary surfactant. - lamellar bodies. Type3Pneumocytes (brush cells) -Macrophages or Dust cells.
Early (embryonic) development of the lung. The respiratory diverticulum invaginates the surrounding mesenchyme. The mesenchyme continues to secrete inducing factors to guide the repetitive branching and growth of the developing airway, a process called branching (dichotomic) morphogenesis.
Histological structures of conducting airways. Histological structures that facilitate gas exchange. Properties of alveoli that control ventilation. Macrophages and handling of foreign particles. Rate of gas diffusion between air and blood is related to the surface area and thickness of the interface. Air.
