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

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

Anatomy & Physiology

9. Muscle Tissue

Introduction to Muscles and Muscle Tissue

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Multiple Choice

The functions of the erector spinae muscles include which of the following?

Compressing the abdominal contents

Abducting the thigh

Flexing the forearm at the elbow

Extending the vertebral column

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Verified step by step guidance

Understand the location and anatomy of the erector spinae muscles: These muscles are a group of long, thin muscles that run along the spine, from the lower back to the upper back and neck. They are responsible for maintaining posture and controlling movements of the vertebral column.

Review the primary function of the erector spinae muscles: Their main role is to extend the vertebral column, which means straightening the spine or bending backward. This action is crucial for maintaining an upright posture.

Eliminate incorrect options based on muscle function: Compressing the abdominal contents is a function of abdominal muscles, abducting the thigh is performed by muscles like the gluteus medius, and flexing the forearm at the elbow is controlled by muscles such as the biceps brachii. None of these are related to the erector spinae muscles.

Focus on the correct option: Extending the vertebral column aligns with the known function of the erector spinae muscles. This movement involves straightening the spine or bending backward, which is consistent with their anatomical role.

Conclude the reasoning: Based on the anatomical location and function of the erector spinae muscles, the correct answer is extending the vertebral column. This matches their role in maintaining posture and facilitating spinal extension.