To take one step, the body uses about 200 muscles. In the video, learners see the difference between the three types of muscles found in the human body—skeletal/striated, smooth, and cardiac. The instructor then explains, in detail, how myosin and actin work to contract a skeletal muscle in the presence of ATP and calcium, or the sliding filament theory. 

Concepts

the muscular system, skeletal muscle, myosin, adenosine triphosphate

Show More Show Less

Additional Tags

science

Show More Show Less

Instructional Ideas

• Place learners in pairs and pause video, asking pre-scripted questions about the filament theory and allow time for discussion

Classroom Considerations

• This is the sixth video six in a series of 21
• Assumes learners have some understanding of ATP and its role in the body
• Video teaches concepts important in AP Biology and other higher level biology classes

Pros

• Uses high-quality images and diagrams
• Video is short, allowing time for follow-up activity to support the concepts taught
• Includes closed captioning for those learners who struggle with English or are hearing impaired

Cons

• None

Common Core

RST.11-12.4