Excretory system

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

• ureters
• urethra
• urinary bladder
• urea

Which excretory organ eliminates water and some chemical wastes in perspiration?

• lungs
• skin
• liver
• kidneys

What function do the kidneys perform?

• eliminate carbon dioxide
• supply oxygen to body cells
• remove urea and excess water
• play a role in gas exchange

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

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

What is #3?

• Kidney
• Ureters
• Bladder
• Urethra

How many kidneys do you have?

• 1
• 3
• 5
• 2

Which organ system removes cellular wastes as the result of cellular respiration?

• nervous
• digestive
• excretory
• circulatory

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

Excretion is...

• The removal of substances from the body

• The removal of waste products from the body

• The removal of faeces from the body

• The release of enzymes or hormones by a gland