BG710: Major Muscles Groups

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In this class, we will learn the names and functions of the major muscles. While learning the muscles, use yours to see them in action.

Overview

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FUN FACTS ABOUT MUSCLES

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Is the brain a muscle?

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No. The brain is not a muscle; it is an organ. It is mostly made of fat and water and weighs about 3 pounds when it reaches its full size.

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Muscles can only pull; they cannot push. They enable all movement in the body, whether voluntary (you are in control) or involuntary (you are not in control).

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Cardiac (kar-dee-ak) muscle is found only in the heart.Is this a voluntary muscle or an involuntary muscle?

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Smooth muscles are involuntary. They line the blood vessels and organs, such as the lungs, stomach, and kidneys.

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Skeletal muscles are attached to bones and allow voluntary movement. There are over 600 skeletal muscles in the human body.

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The largest muscles on the body are on your buttocks. You use these muscles every time you take a step.

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MAJOR MUSCLES FROM TOP TO BOTTOM

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MONSTER BRAWL

FACTORY

KRAZY KINGDOM

CHOOSE YOUR GAME BELOW

Masseter (ma-suh-ter)

The masseter is the lower muscle of the jaw. It opens and closes the mouth. The masseter is the strongest muscle in your body.

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Trapezius: (traps) truh-pee-zee-us

The trapezius muscles are a pair of large muscles on the back of the neck and shoulders. They move the head and shoulders.

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Deltoids (aka delts) del-toyds

The deltoids are muscles on your shoulder. They help you twist your arms and raise them sideways.

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Latissimus dorsi (lats) luh-ti-suh-mus / dor-see

The latissimus dorsi are the largest muscles in the back. They help you breathe and do things like pull-ups and swimming.

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Pectorals (pecs) pek-tuh-rals

The pectoral muscles are your chest muscles. They help you breathe and do things like clap your hands and push your arms away from your body.

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Biceps (bye-sehps)

The biceps are large, thick muscles on the front of your upper arms. They pull your arms towards your face.

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Triceps (try-sehps)

The triceps are large, thick muscles on the back of your upper arms. They pull your arms towards your feet.

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Abdominals (ab-duh-meh-nuhls) (abs)

Your abdominal muscles are in the middle of your body in the stomach area. They protect your organs and help you breathe. You use them when you bend and twist your body.

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Obliques oh-bleeks

The obliques are your waist muscles. They help you breathe and bend forward, backward, and side to side.

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Gluteus maximus (gluts) gloo-tee us / max-uh-mus

The gluteus maximus muscles are the largest ones on the body. They are some of your strongest muscles, too. They help you walk and stand up from a seated position.

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Quadriceps (quads) kwa-druh-seps

The quadricep muscles are on the front of your thighs. They allow you to move your thigh forward and straighten your knees.

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Hamstrings

The hamstrings are muscles on the back of your thighs. They move your thighs backward and bend your knees. They allow you to do such things as stand up, walk, and jump.

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Gastrocnemius (ga-strok-nee-mee-us)

The gastrocnemius muscles are your calf muscles. These muscles bend your knees and ankles, like when you move your toes toward your knees.

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How many muscles do you already know? Click on the muscle man to play a quick game?

Will you beat your first score when you play the game again at the end of class?

Play the game one time. Keep your score so you will remember it .

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JOIN A GAME

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JOIN A GAME

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