RESPIRATORY PHYSIOLOGY INTRODUCTION

1. DR NILESH KATE
MBBS,MD
PROFESSOR
DEPT. OF PHYSIOLOGY
RESPIRATORY
PHYSIOLOGY.

2. OBJECTIVES.
 Functional anatomy.
 Respiratory passages.
 Pleura and pleural cavity.
 Respiratory parenchyma
 Blood supply
 innervation
 Functions of respiratory system.
 Respiratory functions
 Non – respiratory functions.

3. FUNCTIONAL ANATOMY.
 Respiratory
passages.
 Nasal cavities
 Pharynx
 Larynx.
 Tracheobronchial
tree.
Tuesday, December 6, 2022

4. TRACHEOBRONCHIAL TREE.
 The trachea
 The principal bronchi
 Lobar bronchi
 Segmental bronchi
 Terminal bronchioles
 Respiratory bronchioles
 Alveolar ducts
 Alveoli.
Tuesday, December 6, 2022

5. TRACHEOBRONCHIAL TREE.
 Conducting zone
(1-16)
 Respiratory zone
(17-23)
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6. HISTOLOGICAL FEATURES OF
TRACHEOBRONCHIAL TREE.
 Cartilaginous rings
 Smooth muscles
 Epithelial linings
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7. PLEURA AND PLEURAL CAVITY
 Parietal pleura
 Visceral pleura.
Tuesday, December 6, 2022

8. RESPIRATORY PARENCHYMA
 Microscopic structure of alveolus
 Type I
 Type II (surfactant)
 Alveolar wall contains
 Pulmonary alveolar macrophages
 APUD Cells
 MAST Cells
Tuesday, December 6, 2022

9. RESPIRATORY PARENCHYMA
 Blood supply
 Innervation
 Sympathetic fibres
 Parasympathetic
fibres.
Tuesday, December 6, 2022

10. FUNCTIONS OF RESPIRATORY
SYSTEM
 Respiratory functions
 Non-respiratory functions
 Lung defense mechanism
 IgA
 Pulmonary Alveolar Macrophages
 Cough Reflex.
Tuesday, December 6, 2022

11. PULMONARY CIRCULATION
FUNCTION
 Reservior for left ventricles
 Pulmonary circulation acts as a filter
 Removal of fluid from alveoli
 Role in absorption of drugs
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12. METABOLIC FUNCTIONS
 Surfactant
 Conversion of angiotensin I to II
 Inactivation of vasoactive substances.
 Fibrinolytic mechanism.
 Storage of hormones and biologically
active peptides.
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13. FUNCTIONS DONE BY
RESPIRATORY MUSCLES
 Singing
 Laughing.
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14. THANK YOU