Cartilage is a cushioning surface in the joints - it covers the ends of the bones that comprise a joint, allowing smooth, seamless movement with minimal friction. If cartilage degenerates or wears down, bone ends rub against each other and get damaged, and joints become swollen and painful. ...
There are four different types of bone in the human body: Long bone:It has a long, thin shape. Examples include the bones of the arms and legs (excluding the wrists, ankles and kneecaps). With the help of muscles, long bones work as levers to permit movement. Short bone:It has a s...
Kids want to get strong for a variety of reasons, from looking like their favorite superhero to being better at their chosen sport. While kids cannot lift weights until they hit puberty, there are a variety of activities kids can do to...