The most common cause of xerostomia in the elderly is

Which of the following is a benign mass consisting of a thin fibrous capsule enclosing clear, gelatinous fluids and usually located on a wrist?

a. Hypodermal cyst b. Sagacious cyst c. Ganglion cyst d. Campbell cyst

Patients with a low potassium level are said to have ____.

A. hyponatremia B. hypomagnesemia C. hypocalcemia D. hypokalemia