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ZingPath: Movement and Support

Muscles and Pinocchio’s Arm

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Movement and Support

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Muscles and Pinocchio’s Arm

Life Science

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Learners explore the functions and purpose of muscles.

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Now You Know

After completing this tutorial, you will be able to complete the following:

  • Explain that muscles frequently work in pairs.
  • Explain that while one side of a muscle is being stretched (relaxed), the other side of the muscle squeezes (contracts).
  • Describe muscles as the structures that produce movement in the skeletal system.

Everything You'll Have Covered

The human body contains about 640 skeletal muscles. Skeletal muscles are a key component in the structure of the human body; they are connected to bones via tendons. They work in pairs around joints, such as the elbow, to move parts of the body. Muscles range in shape and size, as well as the functions they perform. The most essential feature of a muscle is the ability to contract or relax.

A muscle is a group of many cells called fibers. They act in a similar manner to other cells in the body, but they look different. In fact, they look like large, long cylinders, which contain proteins. These proteins allow the muscle cells to contract and relax, a function unlike that of other types of cells in the body. However, in order to contract, the muscle cells must use chemical energy from the food intake of a person. Muscles are essential for human structure because they hold the human skeleton upright.

Tutorial Details

Approximate Time 30 Minutes
Pre-requisite Concepts Human body
Course Life Science
Type of Tutorial Concept Development
Key Vocabulary arm, bicep, contract, body, bones, elasticity, elbow, flex, human body, joints, movement, muscles, pairs, skeletal system, squeeze, stretch, triceps