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Anatomy of a Long Bone. A long bone can be divided into two parts – (1) the central shaft or diaphysis and (2) the epiphyses (singular: epiphysis), the bulky ends on both sides. There is a narrow section called (3) metaphysis between the diaphysis and epiphysis. Also, a membrane called (4) periosteum covers the bone. L o n g B o n e L a b e l ...
Throughout fetal development and into childhood growth and development, bone forms on the cartilaginous matrix. By the time a fetus is born, most of the cartilage has been replaced with bone. Some additional cartilage will be replaced throughout childhood, and some cartilage remains in the adult skeleton. Figure 1.
Jul 27, 2024 · Long bone. A long bone is a type of bone characterized by its elongated shape and is typically longer than it is wide. These bones are primarily composed of a central shaft, known as the diaphysis, and two expanded ends called the epiphyses. Long bones are designed to support weight and facilitate movement by acting as levers.
Gross Anatomy of Bone. The structure of a long bone allows for the best visualization of all of the parts of a bone (Figure 1). A long bone has two parts: the diaphysis and the epiphysis. The diaphysis is the tubular shaft that runs between the proximal and distal ends of the bone.
Jul 30, 2022 · Bones at the base of the skull and long bones form via endochondral ossification. In a long bone, for example, at about 6 to 8 weeks after conception, some of the mesenchymal cells differentiate into chondrocytes (cartilage cells) that form the cartilaginous skeletal precursor of the bones (Figure 2a).
Sep 25, 2024 · Bones at the base of the skull and long bones are examples of bones that form via endochondral ossification. In a long bone, for example, at about 6 to 8 weeks after conception, some of the mesenchymal cells differentiate into chondrocytes (cartilage cells) that form the cartilaginous skeletal precursor of the bones (Figure \(\PageIndex{2.1}\)).
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Long bones perform different functions in the human body: By interacting with the muscles and tendons, they allow movement of the limbs. They provide strength, structure and mobility to the upper and lower extremities. They work as levers, allowing them to use their maximum potential for muscle functions (such lifting heavy objects and rapid ...
