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 nerve fibers cross in the optic chiasma?

Temporal retinal fibers

Optic nerve fibers from the left eye

Optic nerve fibers from the right eye

Nasal retinal fibers

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Verified step by step guidance

Understand the anatomy of the optic chiasma: The optic chiasma is a structure located at the base of the brain where the optic nerves (CN II) partially cross.

Identify the origin of the nerve fibers: The optic nerve is composed of fibers from the retina of each eye. These fibers can be categorized into nasal (medial) and temporal (lateral) fibers based on their origin in the retina.

Determine the path of the nasal retinal fibers: Nasal retinal fibers from each eye cross over to the opposite side at the optic chiasma. This crossing allows visual information from the right visual field of both eyes to be processed in the left hemisphere of the brain, and vice versa.

Recognize the path of the temporal retinal fibers: Temporal retinal fibers do not cross at the optic chiasma. They continue on the same side to the brain, ensuring that visual information from the left visual field of both eyes is processed in the right hemisphere, and vice versa.

Conclude which fibers cross at the optic chiasma: Based on the anatomical pathway, it is the nasal retinal fibers that cross in the optic chiasma, allowing for the integration of visual information from both eyes in the brain.