Human Skeleton - Kids Lessons & Worksheets - My Schoolhouse - Online Learning
The human skeleton provides shape and form to the human
body. The average human adult skeleton has 206 bones joined together
by ligaments and
tendons. Babies are born with 270 soft
bones - about 64 more than an adult; and many of these will fuse together
by the age of twenty or twenty-five into the 206 hard, permanent bones.
Our vital organs are protected by the
skeletal system. The brain is protected by the surrounding skull as the
heart and lungs are encased by the sternum and rib cage.
Muscles are
connected to bones by tendons. Bones are
connected to each other by ligaments. Where
bones meet one another is typically called a joint.
Blood cells are produced by the marrow
located in some bones. An average of 2.6 million red blood cells are
produced each second by the bone marrow to replace those worn out and
destroyed by the liver. Bones serve as a storage area for
minerals such as calcium and phosphorus.
