Muscle Groups: Lesson for Kids

Instructor: Rachel Torrens
Your body is able to perform so many different motions, and it's mostly due to your muscles! In this lesson, you'll learn about the major muscles groups of the body that allow you to accomplish so much.

Grouping Muscles Together

Lift your arms above your head. Now stand up on your tiptoes. Excellent! You've just used several major muscle groups! There are over 600 muscles in the human body, but some muscles work together to accomplish daily tasks and are known as muscle groups. Let's look at the major muscle groups in the arms, legs and core of your body.

Muscle Groups of the Arms

In the arm, there are four major muscle groups:

  1. Forearms
  2. Biceps
  3. Triceps
  4. Shoulders

Place your left-hand on your right forearm, and wiggle the right-hand fingers. You should be able to feel muscles moving in your right forearm! You use forearm muscles everyday to help you eat, write and type.

Now, put your left-hand on your upper right arm. Move your right palm towards your right shoulder, and you'll feel your bicep contract. The biceps help you to lift things. Located on the back side of the arm, directly opposite the biceps, are the triceps muscles. The triceps allow you to straighten your arm back out.

Lastly, slide your left hand from your bicep to your shoulder. In the shoulder is a group of muscles that allows you to lift your arms above your head or roll your shoulders.

Muscle Groups of the Legs

In the legs, there are also four major muscle groups:

  1. Quadriceps
  2. Hamstrings
  3. Calves
  4. Gluteals

Place your hands on the front of your thighs, and you'll be touching what's commonly known as the quadriceps, or just quads. Located on the back side of the thigh, directly opposite of the quadriceps, are the hamstrings. Working together, the quadriceps and hamstrings allow you to run, jump and ride a bike!

On the lower backside of your legs are the calves. This muscle group allows you to stand on your tiptoes or flex your feet. Lastly, there are the gluteals, often simply called the glutes. The glutes are located in your buttocks. Without the gluteals, you wouldn't even be able to walk properly!

Muscle groups seen on the front of the body.
Boy with muscle groups

Muscle Groups of the Core

In the core of the body, there are three major muscle groups:

  1. Abdominal muscles
  2. Chest muscles
  3. Back muscles

Place your hand on your belly button, then bend forward and you'll feel your abdominal muscles contract. When you first wake up in the morning and sit up, it's your abdominal muscles that allow you to do so!

Directly above the abdominal muscles are the chest muscles. The chest muscles group allows you to make pushing motions. For example, when you do a chess pass in basketball, you're using the chest muscles group!

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