Hard bones shield delicate internal organs (e.g., the skull protects the brain, and the rib cage protects the heart and lungs).
Thin and curved (e.g., skull bones, sternum). They offer protection and large surfaces for muscle attachment. prezentatsiia 8 klass kosti skeleta
Understanding the skeleton is fundamental to understanding human anatomy. It is a living, changing system that adapts to the stresses we put on it. Maintaining bone health through proper nutrition (Calcium and Vitamin D) and weight-bearing exercise is essential during the teenage years when bone density is still developing. Hard bones shield delicate internal organs (e
Longer than they are wide (e.g., femur, humerus). They function as levers. Longer than they are wide (e
Bones act as levers that muscles pull against to produce motion.
Unique shapes that don't fit other categories (e.g., vertebrae). 4. Bone Structure and Composition Bones are living tissues. A typical long bone consists of: