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 Directional Terms

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

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Multiple Choice

In which direction do oblique muscle fibers run?

Parallel to the midline

At an angle to the midline

Circular around an opening

Perpendicular to the midline

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Verified step by step guidance

Understand the terminology: Muscle fibers are categorized based on their orientation relative to the midline of the body. The midline is an imaginary vertical line dividing the body into left and right halves.

Review the options: Parallel to the midline means the fibers run in the same direction as the midline. Perpendicular to the midline means the fibers run at a 90-degree angle to the midline. Circular around an opening refers to fibers forming a ring-like structure around an anatomical opening. At an angle to the midline means the fibers run diagonally relative to the midline.

Focus on the term 'oblique': In anatomy, 'oblique' refers to something that is slanted or angled rather than straight. This indicates that oblique muscle fibers do not run parallel or perpendicular to the midline but rather at an angle.

Apply anatomical examples: Oblique muscles, such as the external oblique and internal oblique muscles in the abdomen, are named for their angled fiber orientation relative to the midline of the body.

Conclude the direction: Based on the definition and examples, oblique muscle fibers run at an angle to the midline, distinguishing them from other orientations like parallel, perpendicular, or circular.