Digestive System

Question 1

What are the reasons that our body needs food

Answer 1

To get energy

To maintain our bodies

Question 2

What is the job if the digestive system

Answer 2

To break down the molecules of the food so that it is small enough to be absorbed

Question 3

What the digestive tract

Answer 3

Mouth —> pharynx —> esophagus —> stomach —> small intestine —> large intestine —> rectum/anus

Question 4

What is the point of digestive glands

Answer 4

To produce secretions that are needed to digest food

Question 5

What are the four main stages of the digestive system

Answer 5

Ingestion
Digestion
Absorption
Elimination

Question 6

What is ingestion

Answer 6

Taking food into the body by swallowing or absorbing it

Question 7

What are the 2 mechanisms that allow food to go down

Answer 7

Swallowing and peristalsis

Question 8

What happens when we swallow food

Answer 8

When we swallow the epiglottis closes the trachea and the uvula moves backwards to close off the nasel cavity

Question 9

What is the point of the epiglottis closing off the trachea

Answer 9

So That food can travel to the esophagus without getting into the respiratory tract

Question 10

What is digestion

Answer 10

Breaking down food into substances that can be used in the body

Question 11

What are the two types of food transformation

Answer 11

Mechanical

Chemical

Question 12

What is mechanical transformation

Answer 12

Physically breaking down food into smaller parts

Question 13

What are the two types of mechanical transformation

Answer 13

Chewing and churning

Question 14

What is chewing and where does it happen

Answer 14

Crushing and grinding food using teeth and muscles in the mouth. It happens in the mouth

Question 15

What is churning and where does it happen

Answer 15

Secretions mix with the food and it happens in the stomach

Question 16

What is chemical transformation

Answer 16

Digestive tract breaks down compels molecules of food into simpler molecules that the body can now use

Question 17

Where do chemical transformations happen

Answer 17

Anywhere u have glands. In the mouth stomach and small intestine

Question 18

Salivary glands

Answer 18

Secrete : saliva
Located : mouth
Target : starch

Question 19

Gastric glands

Answer 19

Secretions : gastric juices
Located : lining of the stomach
Target : protein

Question 20

Intestinal glands

Answer 20

Secretions : intestinal juices
Location : small intestine
Target: fat,protein,carbs

Question 21

Pancreases

Answer 21

Secretions : pancreatic juice
Location : near the small intestine
Target : fat, protein, carbs

Question 22

Liver

Answer 22

Secretions : bile
Location : near small intestine
Target : fat

Question 23

Where does the step of digestion end

Answer 23

The small intestine

Question 24

What are proteins broken into

Answer 24

Amino acids

Question 25

What are carbs broken into

Answer 25

Simple carbs

Question 26

What is fat turned into

Answer 26

Fatty acids and glycerol

Question 27

What is absorption

Answer 27

The passage of nutrients from the digestive tract into the blood or lymph

Question 28

Where does absorption take place

Answer 28

In the small intestine

Question 29

What are villi

Answer 29

Small folds in the small intestine | Increases the surface area through which nutrients can be absorbed

Question 30

What does nutrients use to get into the human body

Answer 30

They used blood and lymphatic vessels

Question 31

What is elimination

Answer 31

Process of getting rid of the unused materials

Question 32

How does elimination happen

Answer 32

Digestive residue enters the large intestine. Arrives to the large intestine in a liquid form. Water is absorbed from the residue and then enters the rectum in a solid form

Question 33

Explain why someone is able to swallow upside down

Answer 33

Because if peristalsis

Question 34

What is peristalsis

Answer 34

Muscle contractions that allow for food to go down. Happens in the esophagus, stomach, small intestine and large intestine

Question 35

What is the only secretion that is a physical change

Answer 35

Bile because it does not have a chemical reaction with fat it just helps spread it out