Bone Anatomy Diagram: Compact Bone, Spongy Bone, and Yellow Marrow #1659764 (License: Personal Use)

This anatomical illustration depicts a longitudinal cross-section of a long bone, clearly distinguishing three key components: the outer layer of dense compact bone, the inner lattice-like spongy (trabecular) bone, and the central yellow marrow cavity filled with adipose tissue. The diagram uses color-coding and precise labeling to aid understanding of skeletal structure and function in human physiology.

Used in educational contexts such as biology or medical textbooks, online anatomy courses, health websites, and patient education materials to explain bone composition and hematopoietic vs. energy-storage roles of marrow types.