Respiratory System - Respiratory System Functions Gas...

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Respiratory System Functions Gas exchange Smell Filters inspired air Sound production Respiration The exchange of gases between the atmosphere, blood and cells. Involves three processes Pulmonary ventilation - inspiration and expiration. External repiration - the exchange of gas between the lungs and blood. Internal respiration - the exchange of gases between the blood and cells. Structures of the Respiratory System Upper Respiratory System Nose Pharynx (throat) Lower Respiratory System larynx (voice box) Trachea (windpipe) Bronchi Lungs Structures of the Respiratory System Functionally, the respiratory system consist of two parts Conducting portion- a series of interconnected tubes and cavities that conduct air to the lung. Respiratory portion- where gas exchange occurs. Nose Function Warms, moistens, and filters incoming air nasal hairs superior, middle, and inferior nasal conchae (turbinates)- lined with mucus membranes containing goblet cells and is vascular (moistens and traps particles). Receives olfactory stimulation above the superior nasal conchae is the olfactory epithelium (olfactory bulb), which receives olfactory stimuli. Provides a resonating chamber for speech sounds ethmoid, maxillary, sphenoid, and frontal sinuses Connects the eyes with the nose via the nasolacrimal duct.
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Sinusitis Sinusitis starts as a result of blockage of the drainage pathway of the sinuses. This blockage can occur as a result of an anatomical obstruction, swelling due to a cold or allergy, or chronic recurrent sinus infections. When this occurs, mucus that normally is expelled from the sinus builds up in the
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Respiratory System - Respiratory System Functions Gas...

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