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 Heart2h 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

7. The Skeletal System

The Skull

Anatomy & Physiology

7. The Skeletal System

The Skull

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Multiple Choice

What is the deepest bone in the skull?

maxilla

sphenoid

ethmoid

occipital

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Verified step by step guidance

Understand the anatomy of the skull: The human skull is composed of several bones that are categorized into cranial bones and facial bones. The cranial bones protect the brain, while the facial bones form the structure of the face.

Identify the location of each bone mentioned: The maxilla is a facial bone that forms the upper jaw. The sphenoid is a cranial bone located at the base of the skull, in front of the temporal bones. The ethmoid is a cranial bone located between the eyes, forming part of the nasal cavity and the orbits. The occipital bone is a cranial bone located at the back and base of the skull.

Determine the depth of each bone: The depth of a bone in the skull refers to how internally it is situated relative to the surface of the skull. The ethmoid bone is located deep within the skull, forming part of the nasal cavity and the medial wall of the orbits, making it one of the deepest bones.

Compare the depth of the ethmoid bone with the other bones: The maxilla is more superficial as it forms the upper jaw. The sphenoid, while deep, is not as centrally located as the ethmoid. The occipital bone is at the back of the skull, not as deep as the ethmoid.

Conclude that the ethmoid bone is the deepest bone in the skull based on its central and internal location, forming part of the nasal cavity and the orbits.