body systems

Question 1

what is the role of the digestive system?

Answer 1

• the digestive system’s role is to break down complex food into nutrients the body can absorb and use for energy, growth, and repair.
• it also eliminates faecal waste products from the body.

Question 2

detail the parts of the digestive system in order.

Answer 2

mouth, oesophagus, stomach, small intestine, large intestine.

Question 3

what is the role of the teeth in the digestive system?

Answer 3

the teeth mechanically break the food down into smaller pieces, increasing the surface area to volume ratio.

Question 4

what is the role the salivary glands in the digestive system?

Answer 4

• the salivary glands begin the chemical digestion of carbohydrates.
• the saliva also lubricates the food so it can easily travel through the digestive system.

Question 5

what is the mouth?

Answer 5

the starting point of the digestive system where the food is ingested.

Question 6

what is the oesophagus?

Answer 6

a long muscular tube that transfers food from the mouth to the stomach.

Question 7

what is the stomach?

Answer 7

a sack-like organ where food is churned and mixed with gastric juices.