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Which of these is the correct sequence of urine moving through the urinary system?

• kidneys, ureters, bladder, urethra
  
• bladder, kidneys, ureters, urethra
  
• kidneys, urethra, bladder, ureters
• ureters, kidneys, bladder, urethra
  

_______ failure can lead to a buildup of waste products in the body.

• Bladder
• Urethra
• Kidney
• Ureters

Tags

NGSS.MS-LS1-3

Tiny structures known as _________ are found in the kidneys to filter the blood.

• alveoli

• cilia

• villi

• nephrons

The ________ is made up of a million ___________.

• kidney, ureters
• nephron, kidneys
• lungs, nephrons
• kidneys, nephrons

What is urine?

• A substance made by the liver from the breakdown of protein

• A substance made by the skin from the breakdown of protein

• A substance made by the kidneys to remove urea

• A substance made by the lungs to remove CO2

How many kidneys do you have?

• 1
• 3
• 5
• 2

The excretory system rids the body of ______ waste.

• solid
• liquid

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

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

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

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