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The Digestive and Excretory System

Trimester 3 Bell 3 Health

Rachel Noyes

on 28 April 2010

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Transcript of The Digestive and Excretory System

The Digestive and Excretory Systems Introduction: What are they? The Digestive System:
A tract of hollow organs
Breaks down food and removes waste The Excretory System
Removes unwanted fluids
Balances salt and water The Parts of our Digestive System Everyone gets a cookie
to eat... we are going
to track it through your
digestive system. The mouth:
Food enters the body
Chewing and saliva breaks down food The esophagus:
Carries food from mouth to stomach
Peristalsis = wave-like movement The stomach:
Sack where acid breaks down food
Small intestine:
Food is broken down further
Uses liver acids and pancreatic enzymes The liver:
Produces digestive juices
Gall bladder:
Stores liver juices Pancreas:
Produces digestive enzymes Large intestine:
Removes water and electrolytes from waste The Rectum:
Stores waste The Anus:
Where waste exits the body The Parts of our Excretory System The Kidneys:
Filters toxins out of
the blood stream
The Uretes:
Sends waster from the
kidneys to the Bladder The bladder:
Stores urine until it exits
the system. Common Diseases and Disorders Please refer to the pamphlet
I have given you The Sphincter:
Controls release of urine The Urethra:
Where urine exits the body Keeping the Digestive System Healthy Eat fiber Consume less fat Drink ample fluids Eat moderate portions Eat at regular times during the day Keeping the Execratory System Healthy Drink pleanty of water Go easy on salt Reduce caffine intake Conclusion: What we have learned The Digestive System
Food digestion
Diseases and disorders
Keeping it healthy
The Excretory System
How it works
Diseases and disorders
How to keep it healthy Fun Facts: •We make 1 to 3 pints of saliva a day
•It takes 24 to 72 hours to complete digestion
•The small intestine is 22 feet long
•The liver is the largest organ in your body
•You excrete 1 to 1.5 liters of urine a day
•The human bladder can hold up to 400 milliliters of urine
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