Muscular System Worksheet
A Grade 11 Science worksheet covering the structure and function of the human muscular system.
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Muscular System Worksheet
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Read each question carefully and answer to the best of your ability. Use the provided image of the muscular system to assist you with relevant questions.
1. The three types of muscle tissue are skeletal, smooth, and .
2. Muscle contraction is initiated by a signal from the system.
3. The primary energy source for muscle contraction is .
4. muscles are voluntary, meaning they can be consciously controlled.
1. Which of the following is NOT a primary function of the muscular system?
Producing movement
Maintaining posture
Storing calcium
Generating heat
2. Which type of muscle tissue is found in the walls of internal organs like the stomach and intestines?
Skeletal muscle
Cardiac muscle
Smooth muscle
Connective tissue
1. Briefly describe the role of tendons and ligaments in the muscular system.
2. Explain the sliding filament theory of muscle contraction.
1. All muscles in the human body are under voluntary control.
True
False
2. The diaphragm is a skeletal muscle essential for breathing.
True
False
Match each term on the left with its correct definition on the right.
1. Myofibril
a. A muscle cell
2. Sarcomere
b. Functional unit of muscle contraction
3. Muscle fiber
c. Rod-like unit of a muscle cell
4. Actin and Myosin
d. Contractile proteins
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