What is true about the epiphyseal plate of long bones?

What is true about the epiphyseal plate of long bones?

It is the part of a long bone where new bone growth takes place; that is, the whole bone is alive, with maintenance remodeling throughout its existing bone tissue, but the growth plate is the place where the long bone grows longer (adds length).
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How does cartilage grow in the epiphyseal plate of a long bone?

Bone Growth

Bones grow in length at the epiphyseal plate by a process that is similar to endochondral ossification. The cartilage in the region of the epiphyseal plate next to the epiphysis continues to grow by mitosis. The chondrocytes, in the region next to the diaphysis, age and degenerate.

Where is epiphyseal plate located?

Growth plates, also called physes or epiphyseal plates, are discs of cartilage present in growing children. They are located between the middle and the end of the long bones, such as the bones of the arms and legs. Most long bones have one growth plate at each end.

What is the epiphyseal plate composed of?

hyaline cartilage
The epiphyseal plate is mostly composed of hyaline cartilage and is visible in radiographs of young animals as a radiolucent line between the epiphysis and the metaphysis2 (FIGURE 1). In mature animals, the epiphysis consists of cancellous bone surrounded by a thin layer of compact bone.

What is the function of the epiphyseal plate?

The epiphyseal growth plate is the main site of longitudinal growth of the long bones. At this site, cartilage is formed by the proliferation and hypertrophy of cells and synthesis of the typical extracellular matrix. The formed cartilage is then calcified, degraded, and replaced by osseous tissue.

What is the function of the epiphyseal bone?

Epiphysis Definition – Epiphysis is the rounded end of a long bone, its primary function is to connect adjacent bones to form joints.

What is the last process to occur in the epiphyseal plate of a long bone?

Lengthening of Long Bones
Long bones stop growing at around the age of 18 in females and the age of 21 in males in a process called epiphyseal plate closure. During this process, cartilage cells stop dividing and all of the cartilage is replaced by bone.

What does epiphyseal plate mean?

growth plate
Medical Definition of epiphyseal plate
: the chiefly hyaline cartilage that unites an epiphysis with the shaft of a long bone and is the site where the bone grows in length : growth plate. — called also epiphyseal cartilage.

What kind of joint is the epiphyseal plate?

cartilaginous joint
The epiphyseal growth plate is a temporary cartilaginous joint formed as the cartilage is converted to bone during growth and development. Cartilaginous joints are connected entirely by cartilage and allow more movement between bones than a fibrous joint, but less than the highly mobile synovial joint.

Which bones have epiphyseal plates?

Growth Plates

• the femur (thighbone)
• the lower legs (tibia and fibula)
• the forearm (radius and ulna)
• the bones in the hands and feet.

What is epiphysis plate?

The growth plate, also known as the epiphyseal plate is a thin layer of cartilage that lies between the epiphyses and metaphyses, and is where the growth of long bones takes place.

What are the 5 zones of the epiphyseal plate?

Match

• Zone of… -resting Cartilage.
• Zone of resting cartilage. -Farthest from the Medullary cavity and nearest epiphysis.
• Zone of proliferating cartilage. -larger chondrocytes undergoing a rapid mitotic cell division.
• Zone of hypertrophic cartilage.
• Zone of calcified cartilage.
• zone of ossification.

What is the function of epiphyseal?

The epiphysis is the rounded end in the long bone, and its primary function is to form joints with adjacent bones.

What is the end of a long bone called?

epiphysis
The wider section at each end of the bone is called the epiphysis (plural = epiphyses), which is filled with spongy bone.

What is the function of epiphyseal plate?

What is a epiphyseal plate?

The epiphyseal growth plate consists of a layer of cartilage present only during the growth period and vanishes soon after puberty in long bones. It is divided to three well-defined zones, from epiphyses; resting, proliferative, and hypertrophic zones.

How many epiphysis does a long bone have?

There are four types of epiphysis: Pressure epiphysis: The region of the long bone that forms the joint is a pressure epiphysis (e.g. the head of the femur, part of the hip joint complex).

Do all long bones have epiphysis both ends?

They grow primarily by elongation of the diaphysis, with an epiphysis at each end of the growing bone. The ends of epiphyses are covered with hyaline cartilage (“articular cartilage”).

What are the 4 types of epiphysis?

Epiphyses – Types

• 2.1 1. Pressure epiphysis.
• 2.2 2. Traction epiphysis.
• 2.3 3. Atavistic epiphysis.
• 2.4 4. Aberrant epiphysis.
• 2.5 Share this:

What is the function of epiphysis?

The epiphysis is the terminal end of the long bone that is typically responsible for articulation. It is also the primary source of red bone marrow in long bones, which allows erythropoiesis.