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 posterior artery occlusion is most commonly responsible for causing locked-in syndrome?

Basilar artery

Vertebral artery

Anterior spinal artery

Posterior cerebral artery

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Verified step by step guidance

Understand the concept of locked-in syndrome: It is a neurological condition characterized by complete paralysis of voluntary muscles except for those controlling eye movement. It is typically caused by damage to the brainstem, particularly the pons.

Identify the role of the basilar artery: The basilar artery supplies blood to the pons, which is a critical structure in the brainstem. Occlusion of this artery can lead to ischemia and damage to the pons, resulting in locked-in syndrome.

Compare the basilar artery to other options: The vertebral artery, anterior spinal artery, and posterior cerebral artery supply different regions of the brain and spinal cord. While they are important, they are not primarily responsible for locked-in syndrome as they do not directly supply the pons.

Recognize the anatomical significance of the basilar artery: The basilar artery is formed by the union of the vertebral arteries and runs along the brainstem. Its occlusion can disrupt communication between the brain and the rest of the body, leading to locked-in syndrome.

Conclude that the basilar artery is the most commonly responsible artery for locked-in syndrome due to its direct involvement in supplying the pons, which is the affected area in this condition.