The Digestive System

Question 1

What happens in the mouth?

Answer 1

Your teeth chew the food and break it down while the amylase digests starch into glucose.

Question 2

Whats peristalsis?

Answer 2

Muscular contractions push the food down the esophagus.

Question 3

What happens in the stomach?

Answer 3

The muscular walls of the stomach help churn the food and also secrete hydrochloric acids that break down the food

Question 4

What happens in the small intestine?

Answer 4

More enzymes are added to the food like lipase protease and amylase. The food molecules are now small enough to pass through the walls and into the bloodstream.

Question 5

Whats bile?

Answer 5

Made in the liver, stored in the gall bladder and is released into the small intestine. (Its an emulsifier) It breaks down large fat droplets into small droplets.

Question 6

How’s the small intestine adapted for its role?

Answer 6

Large surface area provided by villi and micro villi.
Lots of capillaries.
Thin wall.
Lacteals which absorb fat.

Question 7

What does the large intestine do?

Answer 7

The left over undigestible food travels here.
Water is reabsorbed into the blood here.