Bones

Bone serves many important functions. Bones support the body, protect underlying organs, and provide a movable skeleton against which the muscles can work. In addition, bone forms all the cells of the blood, plus takes part in calcium and acid-base balance, and storage of trace elements (such as zinc) needed by cells elsewhere. bone as the most lasting parts of the body, bones are traditionally used for ‘mortal remains’. The longest bone is the femur (thigh bone), which accounts for a quarter of one's stature; the smallest bone is the stapes — one of the tiny ossicles in the middle ear which transmits the vibrations from the ear drum to the inner ear. There are over 200 bones in the adult skeleton. They can be divided into two principal types: the long bones such as the femur, tibia, and humerus, which develop principally from within a cartilaginous framework, and the flat bones such as the skull, bones of the pelvis, and scapula, which develop within membranes of fibrous tissue.

Chest pain

Chest pain is one of the most frightening symptoms a person can have. It is sometimes difficult even for a doctor or other medical professional to tell what is causing chest pain and whether it is life-threatening.
1. Any part of the chest can be the cause of the pain including the heart, lungs, esophagus, muscle, bone, and skin.
2. Because of the complex nerve distribution in the body, chest pain may actually originate from another part of the body.
3. The stomach or other organs in the belly (abdomen), for example, can cause chest pain.