1. Human Body Organs and Functions 2014
Department of Mathematics and Science

2. What is the heart’s function
What is the heart’s function? Let’s sing Heart and Blood and find out Sung to “The Ants Go Marching One by One”
The heart is pumping blood for us, Hurrah, hurrah! The heart’s a muscle, fabulous, It pumps all day without a fuss, And the blood goes round Because of our pumping heart!
The blood supplies us oxygen, Hurrah, hurrah! It’s what our body needs to run, The blood supplies us oxygen,] And that’s a need for everyone, And the blood goes round Because of our pumping heart!
What does this song teach us about the heart?
It’s a muscle. It pumps blood around the body. The blood supplies oxygen that our body needs.
Play the Discovery Ed. Video: Introducing the Human Heart.
Let’s watch Introducing the Human Heart How does the heart work?

3. Explain: What does your heart do for your body?
The heart is a muscle-powered pump moving blood
throughout the body.
Blood leaves the left side of your heart and travels through
blood vessels called arteries, which gradually branch out
into smaller vessels called capillaries.
Inside the capillaries in the lungs, an oxygen-carbon dioxide
exchange occurs and in the intestines, a nutrient-waste
exchange occurs.
This oxygen-poor blood then travels in veins back to the
right side of your heart, and the whole process begins
again.
Did you know it takes less than 60 seconds to pump blood
into every cell in your body.
Review with students.
Department of Mathematics and Science

4. A Look at the Lungs Breathing
Breathe in! Breathe out! All day Air goes In your lungs, Out your nose. Inhale! Exhale!
Wide awake, Fast asleep, Day and night, You keep Breathing in, Breathing out. You don’t even Think about Breathing free. Breathe Involuntarily!
Engage with a Poem: Breathing Then ask what do our lungs do? (Take in oxygen from the air you breathe. Get rid of the waste gas, CO2.) After responses go to next slide.
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5. Department of Mathematics and Science
Skin
What covers my arms, legs, and chin? Skin! What protects each ankle and shin? What’s layered so it isn’t too thin? What helps keep my body parts in? What stretches whenever I grin?
Engage: Have students read the poem. Ask what is the function of our skin? Listen to responses. Then students can also read ScienceSaurus Handbook p. 119 and Gr. 5 SF textbook p. 45 to find out more.
Go to the next slide.
Department of Mathematics and Science

6. What does our Skin do for us?
Protects your other organs and tissues.
Helps maintain a stable body temperature.
Water and wastes leave your skin in perspirations.
Structures such as hair and sensory organs are contained in the skin.
What’s special about the skin when
compared to all other organs?
It’s the largest organ in your body.
Explain: Say: Let’s watch the video to find out about our skin. Click on the hyperlink Skin in the title. What are its functions? What’s special about our skin compared to other organs? (it’s the largest)
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7. Sensory Organs Exploration
Just below the outer layer of the skin we have sense organs that respond to pressure, pain, and temperature. There are two types of temperature receptors:
Hot receptors respond to things hotter than our skin.
Cold receptors respond to things colder than our skin.
They are clustered together in hot spots and cold spots.
While a thermometer can tell us the exact temperature of something. We can only compare the temperature of our skin.
Engage: Ask what are our sensory organs? ( eyes, nose, ears…..) Have students read the first paragraph. What do sensory organs in the skin respond to?
Explore: Say we’re going to do an investigation to look at how the sense organs located in our skin respond to temperature.
Department of Mathematics and Science

8. Sensory Organs
Our body uses our sensory organs to recognize a change outside or inside the body called a stimulus. Special cells in the nervous system called neurons carry messages to and from the brain and spinal cord. Sensory neurons detect a stimulus. Then additional neurons carry the message to the spinal cord and brain. The brain interprets the information and decides on an action. The message is carried back to the motor neurons. They direct the muscles to carry out a response. All of this happens in a fraction of a second. This is measured as reaction time.
What are the sensory organs? (eyes, nose, ears, receptors in our skin tissue)
What is the function of our sensory organs?
What is reaction time?
What does the brain do? Students can make the Brain at Work foldable to read for more information.

9. Department of Mathematics and Science
Digestion
Chomp, chomp! Chew, chew! When you eat, what do you do? Till it’s time to swallow. Gulp, gulp! Swallow, swallow! Down into the stomach hollow. There the food is stored. Mix, mix! Churn, churn! Juices mix as muscles turn. The food is breaking down!
Sugar, starch, protein, fat,
Your body uses all of that.
That your food provides!
That’s the process.
One last question:
What this process called?
Digestion!
Now let’s view:
The Digestive System
Engage: Read the poem. Then ask: What happens during digestion? Then view the movie and ask what organs are at work in our digestive system?
Some are stomach, intestines, liver, gall bladder.
Department of Mathematics and Science

10. Bones (Sung to “Home on the Range”)
Oh, give me some bones That are sturdy as stones. That connect from my head to my toes. My bones help me out, Help my body about, They protect it wherever it goes! Chorus: Bones, bones hard and strong, All connected so nothing goes wrong. Bones protect me as I go along.
The bones in my spine Help me out, Help my body about, Bones protect me as I go along! Chorus: Bones, bones hard and strong, All connected so nothing goes wrong. My bones help me out, Bones protect me as I go along.
Ask: What does our bones do for us? (protect) What do our bones form? (our skeleton)
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11. Bones and Muscles What do they do?
Support your body.
Protect your vital organs.
Store minerals like calcium.
Produce red blood cells.
Attach muscles.
Come in different sizes and shapes.
Move your body.
Make your heart beat and pump blood through out the body.
Let you breathe, cough and sneeze.
Move food through your digestive system.
How do our bones work with our muscles? Let’s watch a Discovery video Bones and Muscles. Listen and take notes on the functions of each.
We can watch another video on just bones. Click on Bones. Then ask?
What the functions of our bones?
Let’s look at the muscles again. Click on Muscles. What are their functions.
Department of Mathematics and Science

12. Why Are Muscles Important to the Body?
Without muscles, you couldn’t move. Muscles have other functions besides movement. Muscle is what causes your heart to beat so blood can be pumped all through your body. Organs inside your body sometimes need to move. Blood vessels have to change their shape. These movements are caused by muscles.
Department of Mathematics and Science

13. What Are the Two Main Types of Muscles?
Muscles that you have to think about using are called voluntary muscles. For example, your brain sends signals to muscles in your legs before you kick a soccer ball. How often do you decide to make your heart beat? You can’t! Your heart muscle beats without you thinking about it. Muscles that work without you thinking about them are called involuntary muscles.
Department of Mathematics and Science

14. Concept Review: Muscular System
Why are muscles important to the body?
Answer: Muscles are important because the provide movement for the body.
2. What are the two main types of muscles?
Answer: The two main types of muscles are
voluntary and involuntary.
Department of Mathematics and Science

15. Department of Mathematics and Science
3. How are muscles different throughout the body? Answer: Different parts of the body have different types of muscles. Some muscles are attached to bones with tendons, and other muscles are within organs and help them function.
Department of Mathematics and Science

16. Department of Mathematics and Science
Evaluate
Word Bank
brain heart lungs muscles pancreas sensory organs
1. Your _________________ tells your body what to do.
2. ________________ work with your bones to help you move.
3. Your ______________ pumps blood throughout your body.
________________ react to a stimulus such as temperature.
5. ________________ produces enzymes necessary for digestion.
Evaluate: Students can do the Evaluate quiz.
Department of Mathematics and Science

17. Department of Mathematics and Science
Florida Achieves: SC.5.L.14.1
What is the purpose of the pancreas?
mixing blood and oxygen
removing excess fluids from the body
storing large quantities of blood, minerals and vitamins
helping with digestion by secreting enzymes to process sugars
Department of Mathematics and Science

18. Department of Mathematics and Science
Florida Achieves: SC.5.L.14.1
2. What is the purpose of the small intestine in the human body?
combines oxygen and blood
stores urine for later removal
removes water from waste matter
digests and absorbs nutrients from food
Department of Mathematics and Science

19. Department of Mathematics and Science
Florida Achieves: SC.5.L.14.1
3. Which answer best describes the purpose of the muscles in the human body?
to protect tissues and form blood
to remove and use nutrients from food
to produce movement and provide support
to combine blood and oxygen needed for movement
Department of Mathematics and Science

20. Department of Mathematics and Science
Florida Achieves: SC.5.L.14.1
4) Which part of the body protects organs, provides support, and forms blood cells?
the brain
the heart
the liver
the skeleton
Department of Mathematics and Science

21. More Body Organ Resources
Poems, Songs, Videos…
Grade 2 AIMS Life Science activities Body Part Bing or Operation Body Parts can be used to review many of the organs.
Department of Mathematics and Science