Acidic Қышқылды /кислый Bile

The food that you eat reaches all cells in your body. What path does food take from the mouth to the cells?

The food that you eat reaches all cells in your body. What path does food take from the mouth to the cells?

VIDEO

VIDEO

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Digestive organs

You will: Understand the structure and functions of digestive system organs

Acidic

Bile

Fold

Gastric juice

Large intestine

Liver

Microvilli

Pancreas

Projection

Rectum

Saliva

Small intestine

To transfer

Villi

Digestion starts in oral cavity.

Digestion starts in oral cavity.

Teeth cut food into smaller pieces.

Tongue helps in tasting and mixing food.

Salivary glands produce saliva that digest carbs and kills bacteria

Food goes from mouth to stomach through the esophagus

Food goes from mouth to stomach through the esophagus

Stomach digest proteins.Glands of stomach produce gastric juice that has HCl (kills bacteria)

Small intestine digests carbs, lipids and proteins. Absorbs digested food.

From small intestine food goes to large intestine

Liver helps intestine to digest food by secreting bile(helps to digest lipids)

• Liver helps intestine to digest food by secreting bile(helps to digest lipids)
• Pancreas secretes pancreatic juice into intestine that digest food
• Large intestine doesn’t digest food, only absorbs water
• Undigested food stored in rectum and removed

Find a connection between 2 pictures.

0,6 m2 folded X unfolded 250 m2

Activity

Work in pairs. Measure and cut knitting threads according to the information in the table (length of digestive

system organs - next slide).

Use different foloured threads for

different digestive organs. Then connect them and explain how food travels down digestive track.

Questions

1. What is digested in esophagus? Explain your answer.

2. Small intestine is longer than large intestine. Explain how it is related to their functions

3. If a person has problems with liver, he or she is advised not to eat fatty food. Explain why.