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

12. The Central Nervous System

Introduction to the Central Nervous System

Anatomy & Physiology

12. The Central Nervous System

Introduction to the Central Nervous System

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Multiple Choice

Which structure marks the most superior boundary of the spinal cord?

Cervical enlargement

Medulla oblongata

Conus medullaris

Foramen magnum

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Verified step by step guidance

Step 1: Understand the anatomy of the spinal cord and its boundaries. The spinal cord is a cylindrical structure that extends from the brainstem to the lower back. It is protected by the vertebral column and surrounded by meninges.

Step 2: Identify the superior boundary of the spinal cord. The spinal cord begins at the foramen magnum, which is the large opening at the base of the skull where the brainstem transitions into the spinal cord.

Step 3: Clarify the role of the medulla oblongata. The medulla oblongata is part of the brainstem and lies just above the foramen magnum. It is not part of the spinal cord but connects to it at the foramen magnum.

Step 4: Differentiate between other structures mentioned. The cervical enlargement is a widened area of the spinal cord that provides nerves to the upper limbs, and the conus medullaris is the tapered end of the spinal cord located near the lower back. Neither of these structures marks the superior boundary.

Step 5: Conclude that the foramen magnum is the correct answer because it is the anatomical landmark where the spinal cord begins and marks its most superior boundary.