What Expected Physiologic Changes of Aging Put Older Adults at Risk

What expected physiologic changes of aging put older adults at risk for respiratory infections? (Select all that apply.)

A) Breath sounds are bronchovesicular in the peripheral lung.
B) Alveoli are less elastic.
C) Weak intercostal muscles reduce effective coughing.
D) Mucous membranes drier
E) Curvature of the spine limits chest wall expansion.
F) Cough reflex is impaired due to deceased sensitivity of receptors.

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