Table of contents

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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 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

Spinal nerve T12 is called a subcostal nerve because it arises ______ the ribs.

above

between

below

within

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Verified step by step guidance

Understand the anatomy of spinal nerves: Spinal nerves are named based on their location relative to the vertebrae and ribs. T12 refers to the 12th thoracic spinal nerve.

Review the term 'subcostal': The prefix 'sub-' means 'below,' and 'costal' refers to the ribs. Therefore, a subcostal nerve is located below the ribs.

Identify the location of T12: The T12 spinal nerve exits the spinal column below the 12th thoracic vertebra and is positioned below the 12th rib.

Compare the options provided: Analyze the terms 'above,' 'between,' 'below,' and 'within' in relation to the anatomical position of the T12 spinal nerve.

Conclude that the correct answer is 'below,' as the T12 spinal nerve is located below the 12th rib, consistent with the definition of a subcostal nerve.