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 of the following structures is directly associated with the dorsal column-medial lemniscal pathway, an ascending tract of the spinal cord?

Spinocerebellar tract

Corticospinal tract

Fasciculus gracilis

Lateral horn

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Verified step by step guidance

Understand the dorsal column-medial lemniscal pathway: This pathway is responsible for transmitting sensory information such as fine touch, vibration, and proprioception from the body to the brain. It is an ascending pathway, meaning it carries information from the periphery to the central nervous system.

Identify the key structures involved in the dorsal column-medial lemniscal pathway: The pathway includes the fasciculus gracilis and fasciculus cuneatus, which are located in the dorsal columns of the spinal cord. These structures carry sensory information from the lower and upper parts of the body, respectively.

Compare the listed options: The spinocerebellar tract is involved in proprioception but is not part of the dorsal column-medial lemniscal pathway. The corticospinal tract is a descending motor pathway, not sensory. The lateral horn is associated with autonomic motor neurons, not sensory pathways.

Focus on the fasciculus gracilis: This structure specifically carries sensory information from the lower half of the body to the brain via the dorsal column-medial lemniscal pathway. It is directly associated with this pathway.

Conclude that the fasciculus gracilis is the correct answer: Based on its role in the dorsal column-medial lemniscal pathway and its function in transmitting sensory information from the lower body, it is the structure directly associated with this pathway.