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

Tiny filtering structures where urine is produced in the kidneys are called

• ureters.
• alveoli.
• nephrons.
• bronchi.

In which excretory organ is urea produced?

• skin
• liver
• kidneys
• lungs

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

• lungs
• skin
• liver
• kidneys

Which excretory organ eliminates CO2?

• lungs
• skin
• liver
• kidneys

Which excretory organ eliminates feces?

• lungs
• large intestine
• small intestine
• stomach

Organs of excretion that maintain homeostasis include the kidneys, lungs, skin, and

• bronchus.
• diaphragm.
• bladder.
• liver.

Tags

NGSS.HS-LS1-3

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 D?

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