Cushing's syndrome is a result of hypersecretion of which of the following glands?

A. An increased pulse is a later symptom of dehydration, as the body attempts to maintain blood pressure and circulation when fluid levels are low.

B. Poor skin turgor is a sign of more advanced dehydration and is usually detected when skin remains tented after being pinched.

C. Decreased urinary output typically occurs as dehydration progresses and the body conserves water, but it is not usually the first sign.

D. Thirst is one of the earliest and most common symptoms of dehydration, as the body signals the need for water intake to restore fluid balance. This is the correct answer.

A. The number of hair follicles does not increase with age. In fact, there is a gradual decrease in the number of hair follicles as one ages.

B. Decreased sebum production is a common skin change associated with aging. Sebum helps keep the skin moisturized, and as its production decreases with age, the skin tends to become drier.

C. Skin elasticity actually decreases with age due to the breakdown of collagen and elastin fibers, leading to wrinkles and sagging.

D. Epidermal permeability tends to increase with age, as the skin becomes thinner and more fragile, making it easier for substances to pass through.