Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart2h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

10. Muscles

Origin and Insertion

Anatomy & Physiology

10. Muscles

Origin and Insertion

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Multiple Choice

Which of the following statements about second-class levers is correct?

Second-class levers have a wide range of motion.

Second-class levers have great strength but are slow and have little range of motion.

Second-class levers are speed levers.

Second-class levers work at a mechanical disadvantage.

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Verified step by step guidance

Understand the concept of levers in the human body: Levers are simple machines that help in movement and are classified into three types based on the position of the fulcrum, effort, and load.

Identify the characteristics of second-class levers: In a second-class lever, the load is positioned between the fulcrum and the effort. This setup allows for greater strength but limits speed and range of motion.

Compare the statements given in the problem: Analyze each statement to determine which one accurately describes the characteristics of second-class levers.

Evaluate the statement 'Second-class levers have great strength but are slow and have little range of motion': This statement aligns with the known characteristics of second-class levers, as they are designed to maximize force output rather than speed or range.

Conclude that the correct statement is: 'Second-class levers have great strength but are slow and have little range of motion,' as it accurately reflects the mechanical advantage and limitations of second-class levers.