Excretory System

Which organ of the excretory system stores urine until the body is ready to eliminate it?

• ureters
• urethra
• urinary bladder
• urea

What is the main function of the excretory system?

• to collect and remove wastes from the body
• to strengthen skeletal muscles
• to protect the nervous system
• to bring oxygen to body cells

Under normal conditions, which of the following substances is found in urine?

• blood cells
• protein
• glucose
• urea

What is #4?

• Kidney
• Ureter
• Bladder
• Urethra

Which sequence represents the correct pathway for the removal of urine from the human body?

• kidney → ureter → urinary bladder → urethra
• kidney → urethra → urinary bladder → ureter
• ureter → kidney → urinary bladder → urethra
• urethra → kidney → urinary bladder → ureter
  

What is the function of the urethra?

• It filters urea out of the bloodstream

• It delivers urine from the bladder to the outside world

• It transfers urine from the kidneys to the bladder

• It prevents urine from leaking out of the bladder

Which of the following is NOT part of your excretory system?

• Heart

• Lungs

• Kidneys

• Skin

In which excretory organ is urea produced?

• skin
• liver
• kidneys
• lungs

The process of removal of the body’s wastes is called

• gas exchange.
• respiration.
• excretion.
• filtration.

What role do the lungs have in the excretory system?

• Removing carbon dioxide

• Removing oxygen

• Gas exchange

• Bringing in oxygen