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

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

These organs are responsible for what?

• storing urine
• storing water
• filtering blood
• they don't have a particular job 

What is #2?

• Kidney
• Ureters
• Bladder
• Urethra

What is #3?

• Kidney
• Ureters
• Bladder
• Urethra

What is #4?

• Kidney
• Ureter
• Bladder
• Urethra

What is #1?

• Kidney
• Ureters
• Bladder
• Urethra