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Cari's Story Case Study

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Cari’s Story

Unit 5 Case Study 1

Amanda Egan (19215107)

A&PII Instructor Dr. Lok
7/21/2015

A.) How could an infection in Cari’s nasal passages and pharynx spread into her sinuses?
Mucous membranes of the nose, parasinal sinuses, pharynx and middle ear are connected by ducts in the throat.

B.) What is the cough reflex? Describe the process that Cari’s respiratory system is using to clear her lungs by coughing.

A Cough reflex is a long-drawn in and deep inhalation followed by a complete closure of the glottis, which results in a strong exhalation that suddenly pushes the glottis open and sends a blast of air through the upper respiratory passages. This process is clearing her lungs by forcing foreign bodies out of the larynx, trachea and epiglottis.

C.) Which structures found in the terminal bronchioles and alveoli normally would protect Cari’s lungs from infectious pathogens and particulate matter?

There are macrophages presents (wandering phagocytes) that remove dust particles and other debris from the alveolar spaces

D.) How would the resistance of Cari’s airway be affected by excess mucus and fluid in her lungs?
The lung capacity is decreased because the air space is already filled with mucus and fluids therefore she can’t take in enough oxygen. The extra mucus and fluids put extra pressure on the lungs.

E.) How would Cari’s lung compliance (the effort required to expand the lungs) be altered as her alveoli fill with fluid due to pneumonia?
The fluid makes it harder to expand the lungs because the fluid makes the alveoli sticky and unable to open/expand.

F.) How would fluid in Cari’s lungs affect her total lung capacity?
Her lung capacity would go down because the air space is already being taken up by fluid.
G.) How does the elevation of Cari’s respiratory rate alter her minute

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