B5.13 Kidney Function and Processes Quiz

What is a primary waste product removed by the kidneys from the blood?

• Glucose

• Urea

• Mineral ions

How many tiny filtering units are found in each kidney?

• Hundreds

• Thousands

• Millions

Which of the following substances is normally completely reabsorbed back into the blood by the kidneys?

• Urea

• Excess water

• Glucose

What is the main role of ADH (Antidiuretic Hormone) in the kidneys?

• To increase glucose reabsorption.

• To control the amount of water reabsorbed.

• To filter blood proteins.

If a person is dehydrated, what will happen to the amount of ADH released?

• It will decrease.

• It will increase.

• It will remain unchanged.

What is the expected appearance of urine when a person has drunk a large volume of water?

• Dark yellow and concentrated.

• Very pale and dilute.

• Cloudy with sediment.

Which gland releases ADH?

• Adrenal gland

• Pituitary gland

• Thyroid gland

What is the process where useful substances like glucose are taken back from the filtered fluid into the blood?

• Filtration

• Excretion

• Selective reabsorption

If a person's blood contains very little water, what will happen to the permeability of the kidney tubules to water?

• It will decrease.

• It will increase.

• It will remain the same.

What can be used to treat kidney failure, as mentioned in the text?

• Dialysis

• Antibiotics

• Insulin