Digestive System

Front 1

The digestive system is a group of __ that work together to __ food so it can be used for the body.

Back 1

organs, digest

Front 2

Food passes through the part of the digestive system known as the __ .

Back 2

digestive tract

Front 3

The digestive tract is lined with __ that helps move the food along and protect the organs from the digestive acids.

Back 3

mucus

Front 4

It can take __ for food to pass through the entire digestive system.

Back 4

12-24 hours

Front 5

__ is a series of processes that break down food to give our body energy and nutrients.

Back 5

digestion

Front 6

__ digestion is the breaking, crushing, and mashing of food

Back 6

Mechanical Digestion

Front 7

__ digestion is the process of breaking down large molecules into smaller nutrients.

Back 7

Chemical Digestion

Front 8

__ are used to break down the molecules.

Back 8

Enzymes

Front 9

Where does digestion begin?

Back 9

The Mouth

Front 10

__ creates small, slippery pieces of food that are easy to swallow and easy to digest.

Back 10

Chewing

Front 11

The outermost layer of the tooth is the __, which is the hardest substance in the body.

Back 11

enamel

Front 12

There are 3 types of teeth

__ - grind food

Back 12

Molars

Front 13

There are 3 types of teeth

__- mash food

Back 13

Premolars

Front 14

There are 3 types of teeth

__- shred food

Back 14

incisors and canines

Front 15

As you chew, the food mixes with __

Back 15

Saliva

Front 16

Saliva contains an __ that begins chemical digestion

Back 16

Enzyme

Front 17

Saliva breaks down carbohydrates in our food into ____ ____

Back 17

Simple Sugars

Front 18

Chewed food called __ is pushed by the tongue from the __ (throat) into a long tube called the __

Back 18

bolus, pharynx, esophagus

Front 19

The esophagus contains muscles that squeeze the food down to the stomach. This process is called __

Back 19

peristalsis

Front 20

The __ is the muscular digestive organ attached to the lower end of the esophagus

Back 20

stomach

Front 21

In the stomach, food is __ by the muscles of the stomach and __ and __ are added to break down the food and kill bacteria

Back 21

squeezed, enzymes, acid

Front 22

After a few hours of mechanical and chemical digestion, the food is now a soupy mixture called __

Back 22

chyme

Front 23

Chyme is released from the stomach through the __ __ into the __ __

Back 23

pyloric schincter, small intestine

Front 24

__ are rings of muscles that push food from one area to another. They are usually found where 2 organs meet, like the pyloric sphincter that pushes food from the stomach to the small intestine

Back 24

sphincters

Front 25

The small intestine is about __ __ long

Back 25

7 meters

Front 26

Small, finger-like projections called __ line the inside wall, making the surface area large

Back 26

villi

Front 27

Villi are covered with cells that __ nutrients and transfer the nutrients to the __

Back 27

absorb, bloodstream

Front 28

Chyme __ passes through the pancreas.

Back 28

never

Front 29

The pancreas sits __ the stomach and the small intestine.

Back 29

between

Front 30

The pancreas releases fluid into the small intestine that helps with __ __ and neutralizes the acid in the chyme.

Back 30

chemical digestion

Front 31

The pancreas releases hormones that regulate __ levels (as part of the endocrine system).

Back 31

sugar

Front 32

The liver helps with digestion by:

Back 32

making bile to break up fat, storing nutrients, and breaking down toxins

Front 33

Small organ that __ __ made by the liver.

Back 33

stores bile

Front 34

Bile is squeezed into the small intestine. What does it do there?

Back 34

Breaks down large fat droplets into smaller ones, making it easier to digest

Front 35

We have good __ living in our digestive tract that helps break down food (especially veggies) and prevents harmful bacteria from colonizing our intestines.

Back 35

bacteria

Front 36

The organ of the digestive system that stores, compacts, and eliminates indigestible material is the __.

Back 36

large intestine

Front 37

The large intestine has a larger __ than the small intestine, but is only about __ __ long.

Back 37

diameter, 1.5 meters

Front 38

The large intestine absorbs __ and __ from the undigested material, turning into semisolid waste called feces or stool.

Back 38

water, electrolytes

Front 39

__ in our diets keeps material moving through the large intestine.

Back 39

fiber

Front 40

The __ is the last part of the large intestine that stores feces until it can be expelled.

Back 40

rectum

Front 41

Feces pass outside the body through an opening called the __.

Back 41

anus

Front 42

Order food goes through the digestive system.

Back 42

1.mouth

2.esophagus

3.stomach

4.small intestine

5.large intestine

6.rectum