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

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Directional Terms

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Multiple Choice

Which passageway in the sphenoid bone allows the optic nerve (CN II) to enter the brain?

Foramen rotundum

Superior orbital fissure

Optic canal

Foramen ovale

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Verified step by step guidance

Identify the cranial nerve in question: The optic nerve (CN II) is responsible for transmitting visual information from the retina to the brain.

Understand the anatomy of the sphenoid bone: The sphenoid bone is a complex bone located at the base of the skull, containing several important foramina (openings) that allow the passage of nerves and blood vessels.

Review the function of the optic canal: The optic canal is a specific passageway in the sphenoid bone that allows the optic nerve (CN II) and the ophthalmic artery to pass through to the brain.

Differentiate the other options: The foramen rotundum transmits the maxillary branch of the trigeminal nerve (CN V2), the superior orbital fissure transmits several cranial nerves (CN III, IV, V1, VI), and the foramen ovale transmits the mandibular branch of the trigeminal nerve (CN V3). None of these are associated with the optic nerve.

Conclude that the optic canal is the correct passageway for the optic nerve (CN II) to enter the brain, based on its anatomical location and function.