The Skeletal System

If you are an arthropod, you’ve come to the wrong place. About 98 percent of all animals are invertebrates, meaning they have no backbone or internal skeletal system, and humans happen to be in the minority. Humans: Read on to learn all about your 206 bones (270 if you’re a newborn), plus the ligaments, tendons, and cartilage that connects them.

Related Topics: Lymphatic System, Respiratory System, Circulatory System, Reproductive System