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Published byGriselda Davidson Modified over 9 years ago
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Physiological Anatomy of the Respiratory System The respiratory system is divided into two zones: المحاضرة الثانية
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Includes : nose, nasopharynx, larynx, trachea and 2 main bronchi one for each lung, and smaller bronchioles. I- The Conducting Zone: Function of the conducting part: 1.Conducting air into the respiratory zone. 2.Air conditioning 3.Humidification 4.Filtration 5.Protective reflexes a- Sneezing reflex b- Cough reflex 6.Non respiratory function
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II- Respiratory Zone : Consists of respiratory units each of which composed of respiratory bronchioles which subdivided into alveolar ducts which end in clusters of small thin walled air sacs called alveoli
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Respiratory Passages 1-The nose The nasal cavity is subdivided into there zones a) The vestibule b) The respiratory area C- The olfactory area
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The olfactory area is lined by olfactory mucosa which consists of: (A) Olfactory epithelium: consists of three types of cells: 1- Sustentecular (supporting) columnar cells 2- Olfactory (sensory) cells 3- Basal cells (B) Corium Diagram of a section of the olfactory mucosa
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