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

The anterior corticospinal tracts innervate which of the following?

Distal muscles of the limbs

Muscles of the tongue

Facial muscles

Axial muscles of the trunk

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Verified step by step guidance

Understand the role of the anterior corticospinal tracts: These tracts are part of the motor pathways in the central nervous system and are responsible for voluntary motor control, specifically targeting axial muscles of the trunk.

Recall the anatomy of the corticospinal tracts: The corticospinal tracts are divided into two main components—the lateral corticospinal tract and the anterior corticospinal tract. The lateral corticospinal tract primarily controls distal muscles of the limbs, while the anterior corticospinal tract focuses on axial muscles.

Identify the target muscles of the anterior corticospinal tract: Axial muscles are those located in the trunk, including muscles responsible for posture and stabilization of the spine.

Eliminate incorrect options: Distal muscles of the limbs are controlled by the lateral corticospinal tract, muscles of the tongue are controlled by cranial nerves, and facial muscles are also controlled by cranial nerves (e.g., facial nerve). These are not innervated by the anterior corticospinal tract.

Conclude that the anterior corticospinal tracts innervate axial muscles of the trunk, which aligns with their function in controlling voluntary movements of the trunk and maintaining posture.