Muscle Structure Worksheet
Explore the fascinating world of muscle structure with this Grade 7 science worksheet, covering muscle types, fibers, and their functions.
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Muscle Structure Worksheet
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Read each question carefully and answer to the best of your ability. Use the provided space for your responses.
1. Which type of muscle is responsible for voluntary movements like lifting your arm?
Cardiac muscle
Smooth muscle
Skeletal muscle
All of the above
2. Which of the following is NOT a characteristic of cardiac muscle?
Found only in the heart
Voluntary movement
Striated appearance
Involuntary movement
3. The bundles of muscle fibers are called .
4. Smooth muscles are found in the walls of internal organs like the stomach and .
5. Describe the primary function of skeletal muscles.
6. Based on the diagram of a muscle fiber cross-section, identify one key component you observe.
7. All muscles in the human body are under conscious control.
True
False
8. Tendons connect muscles to bones.
True
False
Match each term on the left with its correct description on the right.
9. Myofibril
a. Connective tissue surrounding a muscle
10. Fascicle
b. A bundle of muscle fibers
11. Epimysium
c. A basic rod-like unit of a muscle cell