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| Home • Major Parts
• Function of the Skeletal
System • Bibliography |
| The Skeleton System has many
functions. It specially is to help you move. The end where two bones
meet is called the joints. There are different joints in the whole
body, they are: Ball-and-socket joint, Hinge joint, Saddle joint, Pivot
joint, gliding joint and Ellipsoid joint. They help the bones move
without damaging each other. I am doing the lower part of the skeleton,
from the pelvis down. The Pelvis is a bone that located at the waste. It is a basin-shaped bone that supports the spinal column and protects some organs. It is made up of several bones that are firmly joined together. The Sacrum, which connects the pelvis to the spine and the pelvis, supports the bottom of the spine. Other bones that form the pelvis are the Ilium, Ischium, and Pubis. The femur is attached to the pelvis by a ball-and-socket joint. A women’s pelvis is bigger so she can give birth to a baby. At the back of the pelvis to muscles meet. They are the Gluteus Maximus. They support us when we sit down and when we walk. The Femur extends from the pelvis to the knee. It is the biggest, heaviest, and strongest bone in the body. The Hinge joint at the knee connects the femur to two thinner bones. This joint is fully closed when you sit down and opens and closes when you are running or walking. The femur is 1/4 of your body. A teardrop-shaped bone called the patella or kneecap protects the knee. The Fibula and Tibia are the two thinner bones that are connected to the femur. The Tibia, or shinbone, is at the front of your lower leg. The Fibula that is even thinner is located along the side. The bones that stick out at your ankles are the lower parts of these two bones. At the back, where the ankle really is, your heel is formed by the calcaneus and six other bones called tarsal, which are only seven. At the middle of the foot are five metatarsals. These are connected to the toe bones that are called phalanges. These phalanges are smaller than the finger ones. The little toe helps you to keep your balance |