Learn Everything About Bones Of Human Body
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The human body is made up of 206 bones, which form the skeletal system. The skeletal system provides support and protection for the body's organs, helps us move and maintain our posture, and serves as a storage site for minerals such as calcium and phosphorus. In this article, we will discuss the bones of the human body in detail, including their structure, function, and the different types of bones.
The structure of a bone is composed of several different components, including the periosteum, the compact bone, the spongy bone, and the bone marrow.
The periosteum is a thin layer of fibrous connective tissue that covers the surface of the bone. It is rich in blood vessels and nerves, and it helps to provide nourishment to the bone and to protect it from injury.
The compact bone is the dense, hard outer layer of the bone. It is composed of tightly packed osteons, which are small units of bone tissue. The osteons are made up of layers of bone cells and mineral crystals, which give the bone its strength and rigidity.
The spongy bone is the inner, less dense layer of the bone. It is composed of small, irregularly shaped pieces of bone tissue called trabeculae. The trabeculae are less organized than the osteons of the compact bone, but they still provide support and strength to the bone.
The bone marrow is the soft tissue that fills the spaces inside the bone. There are two types of bone marrow: red marrow and yellow marrow. Red marrow is responsible for the production of red blood cells, white blood cells, and platelets. Yellow marrow is mostly composed of fat and is responsible for energy storage.
The function of the bones is to provide support and protection for the body's organs and to help us move and maintain our posture. The bones also serve as a storage site for minerals such as calcium and phosphorus, which are important for maintaining healthy bones and teeth.
There are four types of bones in the human body: long bones, short bones, flat bones, and irregular bones.
Long bones are longer than they are wide and are typically found in the arms and legs. They are composed of a shaft, or diaphysis, and two ends, or epiphyses. The shaft is composed of compact bone, and the ends are composed of spongy bone. Examples of long bones include the femur, tibia, and fibula.
Short bones are roughly cube-shaped and are typically found in the wrists and ankles. They are composed mostly of spongy bone and are relatively lightweight. Examples of short bones include the carpals and tarsals.
Flat bones are thin and flat, and they typically provide protection for internal organs. They are composed of two layers of compact bone with a layer of spongy bone in between. Examples of flat bones include the skull, sternum, and ribs.
Irregular bones are bones that do not fit into any of the other categories. They are typically complex in shape and are found in various locations throughout the body. Examples of irregular bones include the vertebrae and the hip bone.
The human skeleton is also divided into two main divisions: the axial skeleton and the appendicular skeleton. The axial skeleton includes the bones that make up the skull, vertebral column, and thorax. The appendicular skeleton includes the bones of the arms and legs and the bones that attach them to the axial skeleton.
In addition to the bones, the skeletal system also includes several other structures, such as ligaments, tendons, and cartilage. Ligaments are strong, fib
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