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 Heart3h 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

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Joe is lifting boxes to load a trailer. To follow proper lifting procedures, Joe should:

Bend at the knees and keep his back straight while lifting.

Keep his legs straight and bend at the waist to pick up the boxes.

Hold the boxes away from his body to avoid injury.

Twist his torso while lifting to move the boxes more efficiently.

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Verified step by step guidance

Understand the biomechanics of lifting: Proper lifting techniques are essential to prevent injury, particularly to the lower back. The spine is vulnerable to strain when bending at the waist or twisting during lifting.

Analyze the options provided: Evaluate each option based on principles of safe lifting. For example, bending at the knees and keeping the back straight minimizes strain on the spine and engages stronger leg muscles.

Consider the role of muscle groups: When lifting, the quadriceps and gluteal muscles should be engaged rather than relying on the lower back muscles, which are more prone to injury.

Review the importance of posture: Keeping the back straight while lifting ensures the spine remains in a neutral position, reducing the risk of herniated discs or muscle strain.

Avoid risky movements: Twisting the torso or holding boxes away from the body increases the risk of injury by creating uneven pressure on the spine and reducing stability during the lift.