People Grow and Change

by Denise Carroll

Life Cycle

People grow and change.

THINK:How does your body

grow and change?

You get bigger.You get bigger.You get taller.You get taller.You get strongerYou get strongerYou get heavier.You get heavier.Your looks change.Your looks change.Your hair style changes.Your hair style changes.Permanent teeth grow.Permanent teeth grow.You learn new things.You learn new things.

All people grow and change.

As you grow, your appearance changes.

Teeth Each person has two sets of teeth during his lifetime.The first set is called baby teeth. There are 20 baby teeth. Between the ages of 6-13, a person will lose these teeth.Between the ages of 6-17, the baby teeth are replaced with permanent teethpermanent teeth.There are 32 permanent teeth.

The SkeletonThe skeletonskeleton is all the bones in your body.You have about 206 bones in your body.

1. Bones protect organs such as the brain, the heart, and our lungs.

2. Bones give us shape. Without our skeleton, we would be a blob of tissue on the floor.

3. Bones help us to move. Muscles are attached to our bones, when our muscles move, they move the bones, and we move.

Muscles

Bones and muscles work together. MusclesMuscles are body parts under the skin that helps the bones move.Muscles allow you to bend or straighten your arms and legs.There are more than 600 muscles in the human body.

THINK:What do my bones and

muscles do?

Bones and MusclesBones give our body shape.Bones protect organs.

Bones and muscles work together to move the body.

Exercise and healthful foods keep our bones and muscles healthy.

Do you remember how many bones are in your

body?

b. 206

c. 560

a. 102

Sorry, click on NO

and try again!

You’re Right!Click on YES to go to the next

slide.

The HeartYour heartheart is a muscle that pumps blood to every part of your body. It is about the size of your fist and weighs less than a pound.It keeps you alive.Your heart pumps more than 5 quarts of blood through the body every minute.Your heart rateheart rate is how fast or slow your heart beats. Your heart beats about 72 times a minute.

What do you think will happen to our heart rate

when we exercise?

Let’s see!

LungsYour lungslungs are body parts that help you breathe the air you need to live. You have two lungs.When you breathe air through your mouth or nose, the air goes down

a tube to your lungs.When you breathe your chest expands.

How does your heart and

lungs work together?

Your heart and lungs help keep you alive.Your heart and lungs carry oxygen to all parts of the body.Exercise makes the heart and lungs stronger and healthier.

Let’s learn how our body digests food.

DigestDigest means to break down food in

the body.

EsophagusWhen you chew your food, it mixes with a liquid in your mouth called salivasaliva.Saliva helps break down food.Once food has been chewed and swallowed, it goes down a tube called the esophagusesophagus.

Stomach

Once the food goes down the esophagus, the food enters the stomachstomach. The stomach continues to break down the food. It has muscles that mash food into a sloppy soup.

Large and Small Intestines

Food leaves the stomach and enters the small intestinesmall intestine. Nutrients your body needs from the food you eat goes to all parts of the body.You have about 20 feet of small intestines.Food that your body does not need goes to the large intestinelarge intestine.

LS

THINK:How do I digest food?

Digestive SystemDigestion begins when food enters the mouth where salivasaliva and teeth break it down.Once food has been chewed and swallowed, it goes down a tube called the esophagusesophagus to the stomachstomach.Stomach muscles mix the food and moves it to the small intestinesmall intestine.Food that your body does not need goes to the large intestinelarge intestine.

Eating Healthy Foods

The Food Guide Pyramid will show us how to choose healthy foods.

Grains Vegetables Fruits Oils Milk Meat &Beans

Eating healthy foods will help your body grow and

give you energy.

We will learn more about the food guide pyramid in the next

slide show.

THINK: What can we do to

keep our body healthy?

Staying Healthy

Eat the right foodsGet plenty of exerciseGet plenty of restDon’t smoke Don’t take drugs or drink alcohol

Congratulations!

You have learned how your body grows and changes.You have also learned about many organs and how your body digests food.YOU’RE A WINNER!

ResourcesResourceshttp://http://images.search.yahoo.comimages.search.yahoo.com

http://http://office.microsoft.comoffice.microsoft.com/clipart/clipart

http://http://www.mypyramid.gov/index.htmlwww.mypyramid.gov/index.html