What does spongy bone do and where is found?

Functions of Spongy Bone:

1. Shock Absorption: Spongy bone's porous structure acts as a shock absorber, reducing impact forces and providing cushioning for the joints.

2. Bone Marrow Storage: The spaces within the spongy bone are filled with red bone marrow, which produces blood cells (hematopoiesis).

3. Mineral Homeostasis: Spongy bone plays a role in maintaining mineral homeostasis, storing and releasing minerals such as calcium and phosphorus as needed.

Locations of Spongy Bone:

1. Epiphysis: The ends of long bones, known as the epiphyses, contain a significant amount of spongy bone.

2. Flat Bones: Spongy bone is found within flat bones, such as the sternum, skull, and scapula.

3. Irregular Bones: Irregular bones, such as the vertebrae, also have a substantial amount of spongy bone.

Overall, spongy bone is essential for shock absorption, bone marrow production, and mineral storage. It is found in the epiphyses of long bones, within flat bones, and in irregular bones.