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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

Standing on your toes is an example of a __________.

speed lever

third-class lever

second-class lever

first-class lever

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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 they are classified into three types based on the position of the fulcrum, effort, and load.

Identify the components of a lever: the fulcrum (pivot point), the effort (force applied), and the load (resistance or weight to be moved).

In a second-class lever, the load is positioned between the fulcrum and the effort. This arrangement allows the effort to move a larger load with less force.

Consider the action of standing on your toes. The fulcrum is at the ball of the foot, the load is the body weight, and the effort is applied by the calf muscles.

Recognize that standing on your toes fits the definition of a second-class lever, where the load (body weight) is between the fulcrum (ball of the foot) and the effort (calf muscles).