The Excretory System

Key Notes :

What is the Excretory System?

• The excretory system is a group of organs that help our bodies get rid of waste and unwanted materials.

Why Do We Need It?

• Our bodies produce waste from the food we eat and the activities we do. Removing waste is essential to keep our bodies clean and healthy.

Main Organs Involved:

• Kidneys: Two bean-shaped organs that filter blood to remove waste and extra water, forming urine.

• Ureters: Tubes that carry urine from the kidneys to the bladder.

• Bladder: A sac-like organ that stores urine until it is ready to be released from the body.

• Urethra: The tube through which urine leaves the body.

How Does It Work?

• The kidneys filter out waste and extra water from the blood.
• This waste turns into urine, which travels down the ureters to the bladder.
• The bladder stores urine until it’s full, and then the urine is expelled from the body through the urethra.

Importance of Drinking Water:

• Drinking plenty of water helps the kidneys function properly and keeps the excretory system healthy.
• Water helps to flush out waste more efficiently.

Fun Fact:

• The kidneys filter about 50 gallons of blood each day!

Healthy Habits for a Strong Excretory System:

• Drink enough water daily.
• Eat healthy foods like fruits and vegetables.
• Avoid too much junk food, which can make the kidneys work harder.

Let’s practice!