Digestive System Parts

Question 1

Mouth - structure & function

Answer 1

This is where the process of digestion begins. Food is broken down, physically, into smaller pieces, and the enzyme amylase is released to begin the chemical breakdown of starch.

Question 2

Oesophagus - structure & function

Answer 2

Peristalsis occurs in this organ, pushing food down this narrow tube using muscular contractions.

Question 3

Stomach - structure & function

Answer 3

This J-shaped organ has muscular walls which churn the food, mixing it with gastric juices.

Question 4

Small intestine - structure & function

Answer 4

This organ is the longest part of the digestive tract. It absorbs digested nutrients into the bloodstream and allow water and undigested waste to travel through.

Question 5

Large intestine - structure & function

Answer 5

Water is absorbed in this organ, forming a solid material comprised of undigested waste.

Question 6

Liver - structure & function

Answer 6

This is the body’s largest internal organ. It is a chemical factory which produces essential chemicals including bile.