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: Bone Marrow

Anatomy & Physiology

6. Bones & Skeletal Tissue

Gross Anatomy of Bone: Bone Marrow

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Multiple Choice

In spongy bone, the spaces between trabeculae are filled with:

compact bone

bone marrow

hyaline cartilage

synovial fluid

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Verified step by step guidance

Understand the structure of spongy bone: Spongy bone, also known as cancellous bone, is characterized by a porous, lattice-like structure made up of trabeculae. These trabeculae are small, needle-like or flat pieces of bone that create spaces within the bone.

Learn the function of the spaces between trabeculae: The spaces between trabeculae are not empty; they serve a functional purpose by housing specific materials that contribute to the bone's role in the body.

Identify what fills the spaces: The spaces between trabeculae in spongy bone are typically filled with bone marrow. Bone marrow can be either red marrow, which is involved in hematopoiesis (the production of blood cells), or yellow marrow, which primarily stores fat.

Differentiate from other options: Compact bone is dense and forms the outer layer of bones, not the spaces within spongy bone. Hyaline cartilage is found in joints and other areas but does not fill the spaces in spongy bone. Synovial fluid is found in synovial joints and serves as a lubricant, not a filler for trabecular spaces.

Conclude the correct answer: Based on the structure and function of spongy bone, the spaces between trabeculae are filled with bone marrow, which supports the bone's physiological roles.