Question

Changes that occur with aging in the urinary system include all of the following, except?

1) the number of functional nephrons decline
2) a reduction in the GFR occurs
3) there is increased sensitivity to ADH resulting in a better ability to concentrate the urine
4) there are more problems with the micturation process resulting in urinary incontinence
5) there is a loss of sphincter muscle tone resulting in urinary incontinence

Answer 1

The correct answer is that there is increased sensitivity to antidiuretic hormone (ADH) resulting in a better ability to concentrate the urine. This does not occur with aging; aging typically leads to decreased ADH sensitivity.

Step-by-step explanation:

The question concerns the changes that occur in the urinary system as it ages, which include a decline in the number of functioning nephrons, a reduction in glomerular filtration rate (GFR), problems with micturition such as urinary incontinence, and a loss of sphincter muscle tone. However, one of the changes listed is incorrect: there is decreased, not increased, sensitivity to antidiuretic hormone (ADH) with aging, making it harder, not easier, for aging individuals to concentrate their urine.

The correct answer is therefore option 3, there is increased sensitivity to ADH resulting in a better ability to concentrate the urine. This option does not represent a change that typically occurs with aging in the urinary system.