Muscles and Their Actions
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Objective
I can identify the major muscles of the human body and describe their primary functions.
Part 1 of 4
Warm-up video
Professor Dave Explains · 8:28Vetted channel
We don't generate video — this one is by Professor Dave Explains on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
Muscles can only contract and pull, so complex motion requires many muscles working together.
- 2
The four functional classifications of muscles are prime movers, antagonists, synergists, and fixators.
- 3
Skeletal muscles are named according to criteria such as muscle location, shape, size, and the direction of muscle fibers.
Part 3 of 4
Practice
3 questions
Explain the difference between a prime mover (agonist) and an antagonist muscle. Provide an example of each working together.
A muscle is named 'Rectus Femoris'. Based on the naming conventions discussed, what can you infer about this muscle's location and the direction of its fibers?
Part 4 of 4
Exit ticket
Quick comprehension check
“Name two criteria used to name skeletal muscles and give an example of each.”
Sample answer included in the free materials
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