Worksheet Chapter 14: Support and Movement in Humans and Animals

1. True or False: In a bird, the pectoralis minor muscle contracts to pull the wings downward during flight.

2. True or False: Ligaments have elastic properties that allow them to stretch slightly and hold bones together at joints.

3. Describe how the alternate contraction of circular and longitudinal muscles enables an earthworm to move forward.

4. Name the two bones of the lower arm (forearm) in the human skeleton.

5. Explain what is meant by the term 'antagonistic muscle pair' using the biceps and triceps as an example.

6. Fill in the blank: Tough, non-elastic connective tissue that attaches skeletal muscle to bone is called a ________.

7. Differentiate between Osteoporosis and Osteoarthritis in terms of affected structural components and primary causes.

8. Compare the structure and functions of Tendons and Ligaments.

9. Explain the role of synovial fluid and articular cartilage in maintaining joint health and movement.

10. Which condition is caused by a progressive decrease in bone density, rendering bones porous and prone to fractures?