The 4 Types of Bones in the Human Body

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It is essential to have a general knowledge of human anatomy to understand how your body functions and how you can take care of it. The skeletal system is an important part of anatomy. There are more than 200 bones in the human body. Of these hundreds of bones there are only four different types: long bones, short bones, flat bones and irregular bones.

Long Bones

  • Long bones are strong, large, curved and wide. They are found in the arms and legs and include the femur, humerus, tibia, toes, arms, legs and fingers. These bones work as levers.

Short Bones

  • Short bones are short, spongy and cube-shaped. These bones are covered with compact tissue and are found in the wrist, hands, knees, feet and ankles. More than half of the bones in the hands and feet are short bones.

Flat Bones

  • Flat bones protect vital human organs and muscle attachments. These bones are thin, flat and broad and have layers of compact tissue and a spongy layer in between them. The ribs, skull, sternum, pectoral girdle and pelvic girdle are all flat bones.

Irregular Bones

  • Irregular bones are all the bones in the human body that do not fit into the other categories. They all have different shapes and sizes, and contain spongy and compact tissue in different proportions and surface features. Since these bones are so different from one another, they don't fit into any separate categories and thus are named “irregular bones.”

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