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 spinal nerves exits the spinal cord at the lowest anatomical level?

Cervical nerve (C8)

Lumbar nerve (L5)

Coccygeal nerve (Co1)

Thoracic nerve (T12)

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Verified step by step guidance

Understand the anatomy of the spinal cord and its divisions: The spinal cord is divided into regions corresponding to the vertebrae—cervical, thoracic, lumbar, sacral, and coccygeal. Each region has a specific number of spinal nerves.

Review the numbering of spinal nerves: Cervical nerves are numbered C1-C8, thoracic nerves T1-T12, lumbar nerves L1-L5, sacral nerves S1-S5, and there is one coccygeal nerve (Co1). The numbering reflects their anatomical position along the spinal cord.

Identify the lowest anatomical level: The coccygeal nerve (Co1) is located at the very end of the spinal cord, in the coccygeal region, which is the lowest anatomical level compared to cervical, thoracic, and lumbar regions.

Compare the anatomical levels of the listed nerves: Cervical nerve (C8) is in the cervical region, thoracic nerve (T12) is in the thoracic region, lumbar nerve (L5) is in the lumbar region, and coccygeal nerve (Co1) is in the coccygeal region, which is the lowest.

Conclude that the coccygeal nerve (Co1) exits the spinal cord at the lowest anatomical level, based on its position in the coccygeal region.