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Thursday, April 8, 2021

8th Grade. Digestion 1st Lesson

 Digestive System

Learning outcomes (to be able to):

Content: name and explain structures of digestive system and their functions.

Language: describe flow of food through the digestive system using sequential transition words (subsequently, previously, eventually, next, before (this), afterwards, after (this), then)

Exercise 1. Step one (individual work): Match the key terms of the respiratory and digestive systems with their definitions.

1. epiglottis

a. one of the two organs in your body that you breathe with.

2. trachea

b. an organ of the body which produces a substance that the body needs, such as hormones, sweat, or saliva.

3. lung

c. the liquid inside your stomach that helps you to digest food.

4. esophagus

d. the tube that takes air from your throat to your lungs.

5. gland

e. the tube through which food passes down from your mouth to your stomach.

6. gastric juices

f. the piece of flesh that hangs down at the back of your throat.

 

Step two. Discuss your answers with shoulder partner.

Exercise 2. Step one (individual work). Match the given words and phrases with the numbers on the picture.

 

Words and phrases to use:

A.     Esophagus

B.     Stomach

C.     Large intestine

D.     Ingestion of food

E.     Feces

F.     Anus

G.    Pharynx

H.     Small intestine

I.        Defecation

Exercise 3. Step one (individual work). You will hear the following words in the video. Do you know their meaning? Match the words with their translation in your native language. Use a dictionary to help you.

trigger                                                             squeeze

esophagus                                                     stomach

digestive juices                                              absorb

unrecognizable                                              bile

fats                                                                 nourishment

intestines                                                       proteins

Step two (individual work). Answer questions after watching the video (https://goo.gl/wqoLLI).

1.      How are muscular contractions of the alimentary tract controlled?

2.      What is the function of the stomach according to the video?

3.      What bile is used for?

4.      Where does the body take its nourishment from?

Step three (pair and team work). Discuss your answers with the face partner and class.

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