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

Which of the following muscles is primarily responsible for the lateral flexion of the vertebral column?

Diaphragm

External oblique

Rectus abdominis

Transversus abdominis

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Verified step by step guidance

Understand the concept of lateral flexion: Lateral flexion refers to the movement of bending the vertebral column sideways, which involves specific muscles in the abdominal and back regions.

Review the function of each muscle listed: The diaphragm is primarily involved in respiration, not movement of the vertebral column. The rectus abdominis is responsible for flexion of the vertebral column (bending forward). The transversus abdominis is involved in compressing the abdominal contents and stabilizing the core, not lateral flexion.

Focus on the external oblique: The external oblique muscles are located on the sides of the abdomen and are responsible for lateral flexion and rotation of the vertebral column. They contract on one side to produce lateral flexion toward the same side.

Visualize the anatomy: The external oblique muscles run diagonally from the lower ribs to the pelvis. Their orientation and attachment points allow them to pull the vertebral column sideways when they contract.

Conclude the reasoning: Based on the anatomical functions, the external oblique is the muscle primarily responsible for lateral flexion of the vertebral column, as it is specifically designed for this movement.