Understanding Kidneys: A Quiz

What is the primary function of kidneys?

• To pump blood throughout the body

• To produce hormones only

• To remove waste products and balance bodily fluids

• To absorb nutrients from food

How many times does the body's blood pass through the kidneys each day?

• 20 to 25 times

• 30 to 35 times

• 40 to 45 times

• 5 to 10 times

What are nephrons?

• Muscles in the heart

• Filters and sensors in the kidneys

• Blood cells

• A type of hormone

What does the glomerulus do?

• Produces red blood cells

• Pumps blood into the kidneys

• Absorbs nutrients

• Acts like a sieve to filter blood

What is the role of the tubule in the nephron?

• To pump blood into the glomerulus

• To connect the kidneys to the bladder

• To detect and reabsorb needed substances

• To produce urine directly

What happens to the substances the body needs after filtration?

• They are eliminated as waste

• Converted into hormones

• Reabsorbed into the bloodstream

• Stored in the kidneys

What happens to urea in the kidney?

• It is reabsorbed into the blood

• It is converted into a hormone

• It is redirected as urine out of the kidneys

• It is stored for future use

What triggers the kidneys to release extra water into the bladder?

• Sleeping

• High blood pressure

• Drinking several glasses of water

• Eating salty food

What is the consequence of drinking too much water quickly?

• Decreased urine production

• Kidneys send extra liquid to the bladder

• Increased absorption of nutrients

• Increased blood pressure

Why does urine appear yellower when you're less hydrated?

• Due to high sugar levels

• Because of the presence of more vitamins

• Less water makes it into the urine

• It's a sign of kidney failure