More than a few.


Brainpop: Muscles

Muscle Power

More than a few. The human body has more than 650 muscles.

Unique in its own way. No two muscles in the body have exactly the same function. When one muscle is paralyzed, either stability of the body part is impaired or some specific movement is lost.

Watch your step. Forward locomotion such as walking or running is actually the process of losing and catching one's balance.

Boost your burning power. Did you know that for every 1 lb of muscle you gain, your body burns an extra 50 calories a day? If you can turn at least 5 lbs of extra "fat" into muscle, you will automatically burn an additional 250 calories per day.

Say Cheese!

Muscles normally account for 40% of one's body weight.

You have over 30 facial muscles which create looks like surprise, happiness, sadness, and frowning.

Eye muscles are the busiest muscles in the body. Scientists estimate they may move more than 100,000 times a day!

The largest muscle in the body is the one you sit on!


Types of muscles

Skeletal Smooth



Heart Voluntary Involuntary

When one muscle contracts (flexes), the opposite muscle relaxes.

Exploring the Muscular System

You will work as a group at your table.

Each table will use 1 laptop.

Go through and read the information on each slide and follow directions.

At the end of the presentation, you will complete 4 muscular labs.

Have fun!

Watch a quick movie about muscles.

#1 – How strong are you?

Complete the following exercise to measure the strength of your arms.

Make sure you measure in Kilograms.

1. Biceps: Hold the measuring scale under the desk and push up (make sure you are able to see the number of Kilograms).

2. Triceps: place scale on desk; press with your hands – not your arms.

3. Forearms: Grab scale as hard as you can – do not use your thumbs

#2 – How long can you last?

1. Stand up.

2. Each person take 1 textbook.

3. When the timer starts, hold the textbook in your hands, palms should be flat and facing up; arms should be straight and held in front of you at shoulder length.

4. Write down the amount of time you were able to hold the book out in front of you.

5. Repeat steps 1-4 except this time, hold your arms to your sides.


3 – Wall sits

1. Get into a sitting position against a wall so that your back is flat against the wall and your thighs are parallel with the floor.

2. Time how long you can remain in this position.

3. Repeat 3 times.

How did it feel when you tried to walk after this exercise?

The funny feeling in your legs is muscle fatigue which is when the muscles are tired and lack energy.


#4 – Clothespin Squeeze

1. Hold a clothespin between your thumb and your index finger.

2. Count how many times you can squeeze a clothespin in one minute.

3. Repeat 2 more times in a row.

4. Record the number each time

What did you notice about the number of times you were able to squeeze the clothespin each time?


#5: Which sport is the toughest?

ESPN ranked these sports in order of toughness based on endurance, strength, power, speed, and eye-hand coordination. WRITE – Rank them on your paper from 1 – 11 with 1 being the toughest.






Ice Hockey

Martial Arts

Skiing: Alpine




Here are ESPN’s answers

1. Boxing

2. Ice Hockey

3. Football

4. Basketball

5. Wrestling

6. Martial Arts

7. Tennis

8. Gymnastics

9. Baseball/Softball

10. Soccer

11. Skiing: Alpine

#6 Atrophy

Write the word atrophy on your paper and find a definition for atrophy online.

Write the definition after the word.

For muscles, the term “use it or lose it” applies. After reading the definition of atrophy, how do you think that applies to muscles?

You Are Done!!

Complete the

Word Search

Turn into the basket when done.