3.4

Question 1

Your digestive system contains several organs trough which food travels, what are they?

Answer 1

Oesophagus, stomach, duodenum, small intestine, large intestine, rectum and anus

Question 2

Which food places are an important role in digestion, although food does not travel past them

Answer 2

Tongue, teeth, salivary glands, liver, gallbladder, pancreas

Question 3

You swallowed and your food enters the oesophagus what is it and what is it’s function

Answer 3

It’s a muscular tube, which moves food towards your stomach, the muscles in the lining of the oesophagus contract and relax in turn and food is squeezed towards your stomach

Question 4

What is peristalsis

Answer 4

It’s the process where the circular muscles in front of the food bolus relax and the circular muscles behind the food bolus contract and push the food bolus forward

Question 5

What is your stomach exactly?

Answer 5

It’s a muscular bag where food spends between 2-4 hours it’s connected to the oesophagus

Question 6

What is the pylorus and what does it

Answer 6

It controls the flow of food towards your intestines, it’s a special muscular ring

Question 7

What are gastric juices

Answer 7

Stomach juices that contain digestive enzymes to break down protein

Question 8

What is gastric acid

Answer 8

It destroys bacteria you may have ingested along with your food

Question 9

Why does gastric acid not destroy your stomach wall?

Answer 9

A mucosal layer on the inside of your stomach prevents it doing any damage

Question 10

What is the pH

Answer 10

The measure of a liquids sourness

Question 11

Which ph is considered neutral and high etc

Answer 11

7 is neutral, lower is acidic, higher is basic

Question 12

What is the length of the duodenum?

Answer 12

It’s 12 fingers long

Question 13

In the duodenum food is further digested with the help of the juices what are they

Answer 13

Pancreatic juice and bile

Question 14

What is the function of pancreatic juice

Answer 14

It contains enzymes that break down carbohydrates proteins and fats

Question 15

What is bile

Answer 15

It’s produced in the liver but stored in the gallbladder, it doesn’t contain enzymes

Question 16

What is emulsification

Answer 16

It’s the process where gastric acid in the stomach makes large drops of fat flood on top of a liquid and bile turns in into tiny droplets

Question 17

Bile makes mechanical digestion easier by?

Answer 17

Increasing the surface area of food which enables enzymes to break down the nutrients

Question 18

How long is the small intestine

Answer 18

5 to seven metres lomg

Question 19

Digestion is completed inside the small intestine, how?

Answer 19

Enzymes in intestinal juices break down any undigested carbohydrates and proteins. The enzymes of the pancreas break down fats. At the capillaries all end products of digestion are absorbed into the blood stream

Question 20

The lining of the small intestine is not smooth but has a structure called villi, what is that

Answer 20

It’s a finger like structure, it increases the surface of the intestinal lining.

Question 21

What is the function of villi

Answer 21

It increases the surface area of the intestinal lining = larger surface where nutrients can be absorbed = better absorption. Nutrition blood from small intestine travel’s trough hepatic portal vein to the liver where it travels to rest of body

Question 22

The large intestine has a length of, why is it called that way

Answer 22

1.2 , because of its 6.5 cm diameter

Question 23

What happens at the large intestine

Answer 23

When waste, water, and digestive juices entered the large intestineWater is absorbed into bloodstream and the waste becomes solid and is called faeces

Question 24

What is digested in mouth, stomach, duodenum, small intestine, large intestine, rectum

Answer 24

Starch by amylase
Protein by pepsin
Fats carbo and pro
No digestion
No digestion