1st and 2nd Grade: Watch this video below about all the different body systems that are inside our bodies. If you would like to learn a little bit more about each of the systems, scroll down and read on!
3rd, 4th, and 5th Grade: Begin to read and watch the videos below to learn about each of the 6 different body systems each of us has.
Let's take a closer look at some of the BODY SYSTEMS that are inside each and every one of us.
The Skeletal System
One of the more well known body systems is the skeletal system. There are 206 bones in your body of all different shapes and sizes.
Here are the names of just a few in the skeleton shown below.
Can you find these bones on your body? Some you might find easily, others you might not...but they are all there somewhere. Give it a try.
Here are the names of just a few in the skeleton shown below.
Can you find these bones on your body? Some you might find easily, others you might not...but they are all there somewhere. Give it a try.
Which bones do you recognize from these 3 photos below?
These black and white images above are called X-Rays. Sometimes when you fall you might break (also called fracture) one of your bones. An X-Ray can be taken to show which of your bones are broken. A broken bone can take 6-12 weeks to heal, and you might have to wear a sling like this student below.
Have you ever fractured a bone before?
Have you ever fractured a bone before?
Bones are connected to one another by ligaments. Can you see all of the white ligaments holding these bone structures together?
Sometimes when you get hurt , you can tear or stretch a ligament. Your body can also heal this but it will take some time to recover.
Sometimes when you get hurt , you can tear or stretch a ligament. Your body can also heal this but it will take some time to recover.
Ok let's do some thinkin' about the skeletal system:
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The Muscular System
There are approximately 639 skeletal muscles within your body.
Here are the names of some of the bigger muscles that you have. Which MUSCLES can you find on your body?
Who wants BIG muscles someday?
If you want to get bigger and stronger muscles, it is important to EXERCISE and WORK-OUT everyday!
Below are some exercises we do in PE class. Match up the muscles that are used in order to perform the exercise:
Exercise Muscles Used
Push-Ups/Modified Push-Ups Gastrocnemius
Wall-Sits Abdominals
PACER or Distance Run Pectoralis Major
Curl-Ups Quadricep & Hamstrings
Box Jumps & Jump Rope Challenge Brachioradialis, Finger extensors and flexors
Bar Hang
Below are some exercises we do in PE class. Match up the muscles that are used in order to perform the exercise:
Exercise Muscles Used
Push-Ups/Modified Push-Ups Gastrocnemius
Wall-Sits Abdominals
PACER or Distance Run Pectoralis Major
Curl-Ups Quadricep & Hamstrings
Box Jumps & Jump Rope Challenge Brachioradialis, Finger extensors and flexors
Bar Hang
The Nervous System
The Nervous System is made up of your brain, spinal chord, and the all of the nerve pathways that run throughout your body.
Think of your Nervous System as your Central Control Station. It tells our body what it would like it to do by sending electric signals, starting from inside your brain and ending in different body parts. Electrical messages are also sent back to your brain along this same route. Your brain and spinal chord is called your central nervous system. Your sensory and motor nerves that run throughout your body are called your peripheral nervous system. |
Putting the Nervous System into action in PE...
In PE class when you decide you want to jump rope, your brain will send an electric signal to your leg muscles. This message travels from your brain, down through your spinal column, along the neural pathways and onto your leg muscles. When your leg muscles receive this electrical message they respond by contracting and lengthening, allowing you jump into the air and over the jump rope.
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The Circulatory System
The Circulatory System consists of your heart, arteries, and veins and blood. The blue lines in these diagrams represent arteries and the red lines represent veins . Your heart pumps blood all throughout your body using the artery and vein system.
Why do you think the arteries and veins are represented with different colors? |
Your body systems will only work if they have oxygen at all times. In order for this to happen, 2 things happen within the Circulatory System:
Do you see the red veins entering into the lungs and coming out with oxygen below? The new oxygenated blood is now ready to be pumped throughout your body again. This cycle keeps on repeating over and over again.
- The arteries carry oxygenated blood around your body and deliver it to all of the organs and muscles. This is represented by the blue lines in the diagram above.
- The veins carry de-oxygenated blood back to your heart once it has delivered it to all of the organs and muscles. The heart will send it onto the lungs to pick up more oxygen and expel the CO2. This is represented with the red lines in the diagram above.
Do you see the red veins entering into the lungs and coming out with oxygen below? The new oxygenated blood is now ready to be pumped throughout your body again. This cycle keeps on repeating over and over again.
Interesting facts about the Circulatory System:
- There are 4 chambers in your heart. 2 chambers receive blood back from your body and 2 of the chambers pump blood out to your body. The "thumbing" you hear when you use stethoscope is the sound of the valve chambers opening and closing.
- A heart typically beats 60-100 times per minute. That can be anywhere from 86,400 to 144,000 beats per day. That's a lot! Why would a heart begin to beat faster? Can you find your pulse in side of your neck?
- Your veins really are not blue (although they may appear that way when you look at them). They appear blue due to your eyes seeing blue wavelengths that are being reflected back off your skin. Blood is always red.
The Digestive System
The Digestive System is made up of MANY different structures and organs inside your body. Take a look at the diagram to the right to see some of them ==>>.
All of these digestive system organs have a very important job to do. Your digestive system is in charge of breaking food and drink down into nutrients and delivering these nutrients to the rest of your body for energy, growth and repair. Some of the nutrients which your digestive system is responsible for breaking down include: proteins, fats, carbohydrates, vitamins, and minerals. Your body relies on all of these to keep you functioning at your best. Thank you Digestive System for keeping us going! |
The Respiratory System
The Respiratory System's function is to take in oxygen (inhaling) from the air we breath as well as to release CO2 (exhaling) from your body.
Although there are many part to the Respiratory System, your lungs are probably what is thought of first. It is inside the lungs that oxygen and CO2 are exchanged.
Although there are many part to the Respiratory System, your lungs are probably what is thought of first. It is inside the lungs that oxygen and CO2 are exchanged.