Major Muscles Worksheet
Anatomy and function of major human muscles for Grade 8 science students.
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Major Muscles Worksheet
Name:
Date:
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Read each question carefully and answer to the best of your ability.
1. Which type of muscle is responsible for voluntary movements?
Cardiac muscle
Smooth muscle
Skeletal muscle
All of the above
2. The triceps muscle is located on the back of which part of the body?
Thigh
Calf
Upper arm
Chest
3. The is a large muscle that helps with breathing.
4. Tendons connect to .
5. The quadriceps are a group of four muscles located in the .
6. Cardiac muscle is found only in the heart.
True
False
7. Smooth muscles are under voluntary control.
True
False
Match the muscle with its primary function.
8. Biceps
a. Extends the lower leg
9. Hamstrings
b. Flexes the forearm
10. Deltoids
c. Rotates and abducts the arm
11. Quadriceps
d. Flexes the lower leg and extends the thigh
12. Describe the difference between voluntary and involuntary muscles, and give an example of each.
13. Explain the role of the diaphragm in the process of breathing.