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

6. Bones & Skeletal Tissue

Gross Anatomy of Bone: Compact and Spongy Bone

Anatomy & Physiology

6. Bones & Skeletal Tissue

Gross Anatomy of Bone: Compact and Spongy Bone

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Multiple Choice

Which part of a long bone is made almost entirely of compact bone?

Diaphysis

Medullary cavity

Epiphysis

Articular cartilage

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Verified step by step guidance

Understand the structure of a long bone: A long bone consists of three main parts - the diaphysis (shaft), the epiphyses (ends), and the medullary cavity (central hollow region). Additionally, articular cartilage covers the joint surfaces of the epiphyses.

Learn the characteristics of compact bone: Compact bone is dense and strong, designed to support weight and withstand stress. It is primarily found in the outer layer of bones.

Identify the diaphysis: The diaphysis is the shaft of the long bone and is made almost entirely of compact bone. This structure provides strength and rigidity to the bone.

Differentiate the other options: The medullary cavity is the hollow space within the diaphysis that contains bone marrow, not compact bone. The epiphysis contains spongy bone surrounded by a thin layer of compact bone. Articular cartilage is a smooth tissue that covers the ends of bones at joints, not compact bone.

Conclude that the diaphysis is the correct answer because it is the part of the long bone composed almost entirely of compact bone, providing structural support.