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Antagonistic Muscles Worksheet
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Antagonistic Muscles Worksheet
📚 Part 1: Multiple Choice
1. What does the term antagonistic muscles mean?
Muscles that work together to perform the same action
Muscles that oppose each other so one relaxes while the other contracts
Muscles that are attached to different bones and do not move them
2. Which of these are an antagonistic pair?
Biceps and triceps
Biceps and quadriceps
Deltoid and gluteus maximus
3. When the biceps contract to bend the elbow, the triceps usually:
Contract at the same time
Relax to allow the movement
Turn into tendons
4. Which muscle group is mainly responsible for extending the knee?
Hamstrings
Quadriceps
Gastrocnemius
✏️ Part 2: Short Answers & Activities
5. Fill in the blank: The antagonist of the biceps is the ___________ .
___________
6. Explain in two or three sentences why antagonistic muscles are important for controlled movement.
7. Give one example of an antagonistic pair in the leg (name both muscles):
______________________________________________
8. Describe what happens at the elbow when you lift a heavy object. Mention which muscle contracts and which relaxes.
9. Match the muscle (left) with its main action (right). Draw a line from left to right.
A. Biceps
B. Triceps
C. Quadriceps
D. Hamstrings
1. Flexes the elbow
2. Extends the elbow
3. Extends the knee
4. Flexes the knee
10. Practical: Draw a simple side view of the upper arm and label the biceps and triceps. Use arrows to show which muscle contracts to bend the elbow and which contracts to straighten it.
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