The topic of bones

Bones are the rigid organs that form the skeleton of vertebrates. They provide structural support, protect internal organs, facilitate movement through muscle attachment, store minerals like calcium and phosphorus, and are the site of blood cell production (hematopoiesis) in the bone marrow.

There are two main types of bone tissue:

1. Compact bone: Dense and smooth, forms the outer layer of most bones.
2. Spongy bone: Porous and lightweight, found inside bones, often at the ends of long bones.

Bones are classified by shape:

• Long bones: Longer than they are wide (e.g., femur, humerus).
• Short bones: Cube-shaped (e.g., carpals, tarsals).
• Flat bones: Thin and often curved (e.g., sternum, skull bones).
• Irregular bones: Complex shapes (e.g., vertebrae, pelvis).
• Sesamoid bones: Small, round bones embedded in tendons (e.g., patella).

2 zimekamilika. Zimebaki 3 leo — tuma inayofuata.