Learn about The Digestive System

By Aleesha Fitness Yr9 Paeroa College

Contents Slide

3 The Digestive System Diagram4 The Purpose of the Digestive System5-6 10 interesting facts7-9 10 questions10 The Purpose of the liver11 The purpose of the large intestine 12 Salmonella infection13 How to treat salmonella 14 How to prevent salmonella

The Digestive System

The Digestive System

When we eat foods like bread, meat and vegetables, they are not in a form that the body can use as nourishment. Food and drink have to be changed into really small pieces before it can absorb into the blood. And carried to cells throughout the body.

The Digestive System

•The stomach’s wall is lined with 3 layers of powerful muscles.

•The liver is the largest organ in the body.

•We make 1-3 pints of saliva a day.

•Food stays in your body for 2-3hours.

•An adult’s stomach can hold approximately 1.5 liters of material.

The Digestive System• The esophagus is 25cm long. Muscles contract in waves to move the food down the esophagus. This means that food would get to a person's stomach, even if they were standing on their head.

•On average, the stomach produces 2 litres of Hydrochloric Acid daily.

•In the mouth, food is either cooled or warmed to a more suitable temperature.

•The liver performs more than 500 functions.

•About 400 gallons of recycled blood are pumped through the kidneys every day.

How much do you know?

1. What is the largest organ in the body?A. The liver

B. The kidneyC. Stomach

2. How many layers of muscle does the stomach have? A. 6 layers B. 3 layersC. 1 layer

3. How many pints of saliva do we make a day?A. 3-4B. 1-3 C. 2-4

How much do you know?

4. How long does food stay in our body’s? A. 2-3 hoursB. 4-5 hours C. 1-2 hours

5. How many litres of material can an adults stomach hold? A. 2 litres B. 4 litres

C. 1.5 litres

6. How long is the oesophagusA. 25cm longB. 10cm longC. 30 cm long

How much do you know?7. How many litres of Hydrochloric Acid does the stomach produce

daily? A. 4 litres B. 2 litres

C. 3.5 litres

8. True or false, In the mouth, food is either cooled or warmed to a more suitable temperature.

A. True B. false

9. How many functions does the liver perform?A. 10

B. More then 500 C. 100

10. True or false, 400 gallons of recycled blood are pumped through the kidneys everyday.

A. True B. False

The digestive System

The function of the liver is to get rid of toxins from the blood.

The liver performs over 500 different functions, most of them are to do with its main job as a filter. The kidneys perform less functions, but they are just as vital as the liver. If either of these organs stop functioning, you would soon be dead.

The Digestive System

The purpose of the large intestine is..To take some of the goodies into the blood stream and go to the body.

How does the large intestine work?The large intestine, functions mainly to absorb water from the undigested food back into the blood.

The Digestive System

A salmonella infection is a food borne illness caused by the salmonella bacteria carried by some animals, which can be transmitted from kitchen surfaces and can be in water, soil, animal feces, raw meats, and eggs. Salmonella infections typically affect the intestines, causing vomiting, fever, headaches, and diarrhoea.

The symptoms of salmonella are..Symptoms of Salmonella are diarrhea, abdominal

cramps, fever, nausea, and vomiting.

The Digestive System

Stay away from antibiotics unless directed by your doctor. Avoid eating your normal everyday foods, see your doctor about what foods you can eat and drink a lot of water. You should expect to feel better in a few days. Normal temperatures returning in 3-5 days and overall recovery in 10-14 days.

The Digestive System

•Wash your hands well before and after handling raw meat or eggs.

•Keep hot foods hot and cold foods cold.•Don’t eat any food that you suspect may have

sat in the "danger zone" for too long.•Keep raw meat, poultry, fish and their juices

away from other food. After cutting raw meats, wash hands, cutting board, knife and

countertops with hot soapy water.•Keep cold foods refrigerated until you are

ready to serve them.

The Digestive System•Eat eggs by their "use by" date, which is marked on the carton.•Cook eggs thoroughly so that the yolk and white are both solid.•avoid food, that contains raw eggs (such as cookie dough).•By making sure your chicken is cooked thoroughly (your chicken should not be pink after being cooked).• If your someone in your household gets the symptoms, drink plenty of fluids. Take a non-aspirin pain and fever reducer and get heaps of rest.

The End