Humans use 200 muscles to take one step — that's a lot of muscles! Learners see how skeletal muscles work to pull on bones, creating movement. The narrator then explores motor units, muscle twitches, impulses, contractions, and isotonic versus isometric movements. 

Concepts

the muscular system, skeletal muscle, movement

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Additional Tags

science

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Instructional Ideas

• Have classes move their arms in a push-up motion and feel their pectoralis major contracting and relaxing

Classroom Considerations

• The narrator speaks very quickly, so turn on closed captioning, allowing classes to better follow and understand him
• Video best fits higher level classes due to the depth of concepts
• Video number 22 in a series of 47 on the human body

• This video is hosted on YouTube

Pros

• Engaging topic for high schoolers who are interested in their bodies
• Video uses high quality images and diagrams

Cons

• None

Common Core

RST.9-10.2