Excretory System Video

What are the primary functions of the kidneys?

• Balancing fluid, detecting waste, and releasing essential substances.

• Pumping blood, digesting food, and producing hormones.

• Filtering air, regulating body temperature, and storing nutrients.

• Controlling muscle movement, processing sensory information, and maintaining bone density.

Approximately how much blood do the kidneys filter every 24 hours?

• 8 liters

• 20-25 liters

• 180 liters

• 360 liters

What are the two main components of a nephron responsible for filtering blood?

• Renal artery and renal vein

• Ureter and bladder

• Glomerulus and tubule

• Adrenal gland and medulla

How do kidneys respond when the body's water levels are low?

• They send more liquid to the bladder, making urine clearer.

• They release water back into the bloodstream, making urine yellower.

• They stop filtering blood to conserve water.

• They increase the production of waste products.