13 Spring 17d xGoogie Docs ? Secure l https://docs google.com/ ×YW PA 8 Chl3 Spr
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13 Spring 17d xGoogie Docs ? Secure l https://docs google.com/ ×YW PA 8 Chl3 Spring 17(1 ×y?PA 8 ch. 13 Spring 17 (1 × t/d/1T xs/edit PA 8 Ch. 13 Spring 17 (1) File Edit View Insert Format Tools Add-ons Help Last edit was 4 minutes ago 100%, Normal text Arial patient experiencing it is not treated medically. 3. TOPIC: Respiratory Mucosa Conditions Incoming Air The upper respiratory passageways function to "condition" incoming air in preparation for gas exchange in the alveoli. A. Explain what "condition incoming air" means. B. what specific type of tissue forms the respiratory mucosa that lines the upper respiratory passageways, including the trachea and bronchi? C. Describe the anatomy of the respiratory mucosa. Include a discussion of the structure and function of Goblet cells and cilia.Explanation / Answer
A. The conditioning of incoming air means to moistens the environmental inhaled air while it passes from upper respiratory passages.
The nose mainly moistens the air. The moisture in the nose helps to heat and humidify the air, increasing the amount of water vapour the air entering the lungs contains. This helps to keep the air entering the nose from drying out the lungs and other parts of our respiratory system. When air enters the respiratory system through the mouth, much less filtering is done. It is generally better to take in air through the nose.
B. The upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx). The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke. Hairlike structures called cilia line the mucous membrane and move the particles trapped in the mucus out of the nose. Inhaled air is moistened, warmed, and cleansed by the tissue that lines the nasal cavity.
C. Anatomically The lining is mainly of ciliated pseudostratified columnar epithelium.
Alongwith ciliated columnar cells brush cells, serous cells and goblet cells are present.
Brush cells with microvilli , serous cells containing secretory granules and goblet celss containing mucinogen secretory granules in the basement membrane whicb forms respiratory epithelium. Below it is the lamina propria and the submucosa.
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