The Digestive System

Question 1

What are the phases of digestion

Answer 1

1. Ingestion
2. Movement
3. Mechanical and Chemical digestion
4. Absorption
5. Elimination

Question 2

What actions take place when mechanical digestion is in place

Answer 2

Chew,tear,grind ,mash,mix

Question 3

During chemical digestion,enzyme action improves digestion of what

Answer 3

Carbohydrates,proteins ,lipids

Question 4

What is the digestive system organisation

Answer 4

Gastrointestinal tract (GI)
Direct link between organs 
Structures 
-mouth
-pharynx
-Esophagus 
-stomach
-small intestine 
-large intestine 
-rectum

Question 5

What does the teeth do within the mouth

Answer 5

It mechanically breaks down food into small pieces

Question 6

What does the salvia contain

Answer 6

Amylase which helps break down starch

Question 7

What are the Epiglottis

Answer 7

Flap-like structure at the back of the throat that closes over the trachea preventing food food from entering it

Question 8

Where is the Epiglottis located

Answer 8

In the pharynx

Question 9

How long is the Esophagus

Answer 9

Approximately 20 cm

Question 10

What do the Esophagus functions include

Answer 10

Secreting mucus and moving food from the throat to the stomach using muscle movement called the peristalsis

Question 11

How is the stomach shaped

Answer 11

Like a J

Question 12

What does the stomach do

Answer 12

It is a muscular bag that stores the food and breaks it down into tiny pieces
It mixes food with gastric juices that contains enzymes to break down proteins and lipids

Question 13

What kills the bacteria in the stomach

Answer 13

Hydrochloric acid

Question 14

What is chyme

Answer 14

Food found in the stomach

Question 15

How long is the small intestine

Answer 15

7meters long

Question 16

What do the finger-like projections do

Answer 16

The villi increase surface area

Question 17

True or false

The villus is made up of one cell

Answer 17

False

It’s made up of many cells

Question 18

The villi are covered in microvillie that do what

Answer 18

They further increase surface are for absorption

Question 19

What do the small intestine absorb

Answer 19

80% ingested water
Vitamin 
Minerals 
Carbohydrates 
Proteins 
Lipids

Question 20

True or false

Nutrients from the food passes into the bloodstream through the walls of the small intestine

Answer 20

True

Question 21

What are the functions of the large intestine

Answer 21

• Bacterial digestion and fermentation of carbohydrates
• concentrates waste
• absorbs additional water

Question 22

What is at the end of the large intestine

Answer 22

The Rectum (short term storage which holds feces before it’s expelled)

Question 23

How long is the large intestine

Answer 23

1.5 meters

Question 24

What do the glands include

Answer 24

Liver
Gall bladder
Pancreas

Question 25

True or false

The glands are apart of the path of ingested food

Answer 25

False

They are not apart of the path of ingested food but play a critical role in digestion

Question 26

What does the liver do

Answer 26

Fillers out toxins and waste including drugs ,alcohol and poisons

Question 27

What does bile do

Answer 27

It aids in the digestion of fat

Question 28

How does the liver directly affect digestion

Answer 28

By producing bile

Question 29

What formed gall stones

Answer 29

A fatty diet

Question 30

What does the gall bladder do

Answer 30

Stores bile from the liver and releases it into the small intestine

Question 31

How does the pancreas regulate blood sugar

Answer 31

By producing insulin

Question 32

What does the pancreas produce

Answer 32

Digestive enzymes to digest fats carbs and proteins