Excretory system

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

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

• ureters
• urethra
• urinary bladder
• urea

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

The excretory system rids the body of ______ waste.

• solid
• liquid

What organ is C pointing to?

• Ureters
• Bladder
• Kidney
• Urethra

A short tube where urine is released from the body is the _______.

• Ureter
• Kidney
• Bladder
• Urethra

Urea is best described as

• a tube you pee out of
• waste
• an organ

Which of the following parts is not found in the urinary system?

• Ureters

• Urethra

• Bladder

• Rectum