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

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

• lungs
• skin
• liver
• kidneys

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

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

Using the picture, what is the structure of A?

• ureter
• kidney
• urinary bladder
• urethra

Using the picture, what is the function of structure A?

• Carries urine away from the kidneys
• Stores urine
• Eliminates urea, excess water, and some other materials
• Carries urine away from body and eliminates it

Using the picture, what is the function of structure B?

• Carries urine away from the kidneys
• Stores urine
• Eliminates urea, excess water, and some other materials
• Carries urine away from body and eliminates it

Using the picture, what is the function of structure C?

• Carries urine away from the kidneys
• Stores urine
• Eliminates urea, excess water, and some other materials
• Carries urine away from body and eliminates it

Use the diagram, what is structure B?

• urethra
• kidney
• ureter
• urinary bladder

Use the diagram, what is structure C?

• urethra
• kidney
• ureter
• urinary bladder