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Down We Go!

After Tanno and Iguda were swallowed, they travelled down a tube called the oesophagus that joins the back of the throat with the stomach, where digestion of food continues.

The Biological Food Blender.

The stomach walls contain muscle which, when it contracts, churns the food up like a biological food blender.

The stomach also produces enzymes. These are important for breaking down the food chemicals so they can be absorbed by the body.

It takes about 2 to 4 hours for the partially digested food to move from the stomach to your small intestine, although liquids tend to leave more quickly.

Image credit: Anatomical models by Somso, image courtesy of Adam,Rouilly Ltd.

The Fundic Gland

The stomach produces strong acid. This kills many harmful microorganisms that might have been swallowed along with the food. The walls of the stomach are lined with a special substance called mucus that protects them from being damaged from the acid. The mucus has to be replaced every 2 weeks.

The model in the picture shows a close up of the stomach lining, where a fundic gland produces hydrochloric acid.

Image credit: Anatomical models by Somso, image courtesy of Adam,Rouilly Ltd.

Did You Know?

While swallowing food, we also swallow air. To get rid of this gas, we often burp! Also, when you blush, the lining of the stomach turns red too!

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

YOUR MISSION, SHOULD YOU CHOOSE TO ACCEPT IT …

Neutralisation reactions

Tanno protected the Microwidget by using his indigestion tablets (which contain an alkali) to neutralise the dangerous stomach acid. The following experiments show you a similar reaction:

Photo by cottonbro on Pexels.com

Your Task

  • Roll a couple of fresh lemons on a kitchen counter like dough. This releases the juice inside the lemon.
  • Cut the lemon in half (get an adult to do this part!) and carefully squeeze out the juice into a small cup.
  • Into an empty glass place 1 tablespoon of baking soda.
  • Add 1 teaspoon of washing-up liquid to the baking soda.
  • Stir these up a bit. Pour the lemon juice into the cup and stir. Now watch the bubbles erupt!

– MISSION TWO INCOMING –

– MISSION TWO INCOMING –

– MISSION TWO INCOMING –

– MISSION TWO INCOMING –

Neutralisation reactions number 2

Photo by Kaboompics .com on Pexels.com

Your Task

  • Fill a small, clean plastic bottle about one third with vinegar (your acid).
  • Use a spoon to fill a balloon with baking soda (your alkali). You might need someone to and hold the balloon open.
  • Put the opening of the balloon over the opening of the bottle so the top is sealed.
  • Now tip the baking soda from the balloon into the bottle.
  • Watch the neutralisation reaction take place. Where does the gas in the bubbles go?

– MISSION END –

– MISSION END –

– MISSION END –

– MISSION END –

Your Journey So Far …

Tanno and Iguda have explored these places up to now. You can go back and visit again by clicking below.

Mouth

Stomach

Great to see you here, thank you for the visit! See you next time …

Tanno & Iguda