BSC 1086C Chapter Notes - Chapter 23: Elastic Cartilage, Palatine Bone, Macrophage

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19 Aug 2020
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An overview of the respiratory system and respiratory tract. Nose, nasal cavity, paranasal sinuses, pharynx, larynx, trachea, bronchi, Nose, nasal cavity, paranasal sinuses, and pharynx. Provides an area for gas exchange between the air and the blood. Moves air to and from exchange surfaces of lungs. Protects the respiratory surfaces from dehydration (for example) Assists in the regulation of blood volume, blood pressure, and body fluid ph. Except for the pharynx, smaller bronchi, and alveoli. Function: cilia move mucus in an upward manner (mucociliary escalator) to pharynx so debris can be coughed out or swallowed. Function: produce mucus so inhaled debris will get stuck and not enter the lungs. Hairs in the nose block some of the inhaled debris. Nasal cavity produces mucus to trap inhaled debris. Respiratory epithelium mucus will trap inhaled debris. Mucociliary escalator moves debris upward toward pharynx. Air enters the external nares or nostrils. Area supported by paired alar and lateral cartilages.

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