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Exercise
4th Grade HELP
What day-to-day activities do you do that also provide exercise?
But exercise isn’t just about sports…
Ways to Exercise Everyday:
Going Places:• Walking• Running• Biking• Skate-boarding
On the Playground:• Soccer• Jungle-Gym• Basketball• Tag• Jump-Rope
How do these exercises make you healthier?
How do these exercises make you healthier?
They strengthen your MUSCLES & BONES AND/OR
they strengthen your HEART & LUNGS.
Types of Exercise That Strengthen:
Muscles & Bones:• Monkey Bars• Shooting Hoops• Push-Ups
Heart & Lungs:• Running• Soccer• Basketball• Tag• Jump-Rope
The Cardiovascular SystemWhy is exercise important?
Let’s start from the beginning… CELLS!
Remember what cells need to live?
Remember what cells need to live?
NUTRIENTS & OXYGEN
Unlike amoebas, we can’t engulf food or have oxygen diffuse through our skin.
Unlike amoebas, we can’t engulf food or have oxygen diffuse through our skin.
How do we get oxygen to our cells?
There are a couple steps to get oxygen from the air into our cells…
There are a couple steps to get oxygen from the air into our cells…
1. Get oxygen-rich air into our bodies
There are a couple steps to get oxygen from the air into our cells…
1. Get oxygen-rich air into our bodies
2. Put it into a form that our bodies can transport easily
There are a couple steps to get oxygen from the air into our cells…
1. Get oxygen-rich air into our bodies
2. Put it into a form that our bodies can transport easily
3. Transport it to the rest of our bodies
How do our bodies do these steps?
How do our bodies do these steps?
1. Get oxygen-rich air into our bodies
2. Put it into a form that our bodies can transport easily
How do our bodies do these steps?
Oxygen from the air in your lungs diffuses into your blood
Lungs BloodOxygen (O2)
Carbon
Dioxide(CO2)
3. Transport it to the rest of our bodies
How do our bodies do these steps?
RIGHT Side
LEFT Side
blood
THE HEART
Lungs Bodyblood
3. Transport it to the rest of our bodies
How do our bodies do these steps?
The heart pumps blood… … through blood vessels that reach every corner of our bodies.
Now let’s watch a video that shows how the heart works…
Cardiovascular System Video
(show until 1:10)
Blood vessels come in two types…
Blood vessels come in two types…
Arteries Veins
Blood vessels come in two types…
Arteries VeinsArteries carry oxygen-rich blood from the heart to the rest of the body.
Blood vessels come in two types…
Arteries VeinsVeins carry oxygen-depleted blood from the body back to the heart.
Note: Arteries and veins travel everywhere in the body, not just half like the picture shows.
Let’s review!
Lungs
Heart
Rest of Body
