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: Short, Flat, and Irregular Bones

Anatomy & Physiology

6. Bones & Skeletal Tissue

Gross Anatomy of Bone: Short, Flat, and Irregular Bones

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Multiple Choice

You are shown an image of a cross section of a bone. You decide it is likely a flat bone based on the structure. Without seeing the overall shape of the bone, how could you tell?

You see yellow marrow in the spaces within the bone.

There is no spongy bone present, only compact bone.

You see a long thin sandwich of compact and spongy bone.

The layer of spongy bone is at least twice the thickness of the compact bone.

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Verified step by step guidance

Understand the characteristics of flat bones: Flat bones typically have a structure that resembles a sandwich, with compact bone on the outside and spongy bone (also known as cancellous bone) on the inside.

Identify the presence of compact and spongy bone: In the cross section of a flat bone, you should see a layer of spongy bone sandwiched between two layers of compact bone.

Evaluate the thickness of the layers: In flat bones, the spongy bone layer is often thicker than the compact bone layers. Specifically, the spongy bone layer can be at least twice the thickness of the compact bone layers.

Look for the absence of yellow marrow: Flat bones typically do not contain yellow marrow, which is more commonly found in the medullary cavity of long bones.

Confirm the absence of only compact bone: If the cross section shows only compact bone without any spongy bone, it is unlikely to be a flat bone, as flat bones have both compact and spongy bone layers.