What is epiphyseal 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 is the function of the epiphyseal plates?

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 epiphyseal plate made of?

The epiphysis is made of spongy cancellous bone covered by a thin layer of compact bone. It is connected to the bone shaft by the epiphyseal cartilage, or growth plate, which aids in the growth of bone length and is eventually replaced by bone.

Where are epiphyseal plates?

The Epiphyseal Plate and Growth in Length of a Bone. The power to increase the length of a bone is concentrated in the cartilaginous epiphyseal plates located near each end of the bone. These plates are situated between the shaft of the bone and the secondary ossification centers within the epiphyses.

What is epiphyseal fracture?

Growth plate fractures are classified based on which parts of the bone are damaged, in addition to the growth plate. Areas of the bone immediately above and below the growth plate may fracture. They are called the epiphysis (the tip of the bone) and metaphysis (the “neck” of the bone).

What is a cartilage?

Cartilage a strong and smooth substance made up of “chondrocytes,” or specialized cartilage cells, that produce a matrix of collagen, proteoglycans (a special type of protein) and other non-collagenous proteins. These materials help cartilage attract water and give it its shape and specific properties.

What type of tissue is epiphyseal 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 type of joint is epiphyseal plate?

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.

What is the difference between metaphysis and epiphyseal plate?

In between epiphysis and diaphysis, there is another part of the long bone; we call this metaphysis. Metaphysis contains the growth plate of the epiphysis known as the epiphyseal plate. Furthermore, the epiphysis is covered by articulate cartilage at the joint.

What is yellow marrow?

There are two types of bone marrow: red and yellow. Red bone marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets. Yellow bone marrow is made mostly of fat and contains stem cells that can become cartilage, fat, or bone cells.

What is the purpose of the articular cartilage?

Articular cartilage is the smooth, white tissue that covers the ends of bones where they come together to form joints. Healthy cartilage in our joints makes it easier to move. It allows the bones to glide over each other with very little friction. Articular cartilage can be damaged by injury or normal wear and tear.

How does the epiphyseal plate grow?

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.

What is the function of bony processes?

A bones shape makes possible its functions. Bony projections called processes,for example,provide site for attachment of ligaments and tendons,grooves and openings are passageways for blood vessels and nerves, and a depression of one bone might articulate with a process of another.

What is epiphysis and diaphysis?

The epiphysis is the rounded end of a long bone. The diaphysis is the portion of the shaft of the bone. The epiphysis is filled with red bone marrow, which produces erythrocytes. The diaphysis is the main or midsection of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue.

How is epiphysis different from diaphysis?

Epiphysis meaning - It is the end part of a long bone, initially growing separate from the shaft. Diaphysis meaning - It is the shaft or central part of a long bone.

What is the difference between symphysis and synchondroses?

The key difference between synchondrosis and symphysis is that synchondrosis is a cartilaginous joint where bones are joined by hyaline cartilage, while symphysis is a cartilaginous joint where bones are joined by fibrocartilage. There are cartilaginous joints between bones.

What is fibrous joint?

Fibrous joints are where adjacent bones are strongly united by fibrous connective tissue. The gap filled by connective tissue may be narrow or wide. The three types of fibrous joints are sutures, gomphoses, and syndesmoses. A suture is the narrow fibrous joint that unites most bones of the skull.

What is an example of cartilaginous joint?

Some examples of secondary cartilaginous joints in human anatomy would be the manubriosternal joint (between the manubrium and the sternum), intervertebral discs, and the pubic symphysis.

What are the 3 stages of bone development?

The process of bone formation is called osteogenesis or ossification. After progenitor cells form osteoblastic lines, they proceed with three stages of development of cell differentiation, called proliferation, maturation of matrix, and mineralization.

Why do epiphyseal plates close?

Depletion of chondrocytes due to apoptosis leads to less ossification and growth slows down and later stops when the entire cartilage have become replaced by bone, leaving only a thin epiphyseal scar which later disappears.

What is epiphyseal fusion?

In senescent growth plates, epiphyseal fusion was observed to be an abrupt event in which all remaining chondrocytes were rapidly replaced by bone elements. Fusion occurred when the rate of chondrocyte proliferation approached zero. Estrogen caused this proliferative exhaustion and fusion to occur earlier.

What are 3 types of cartilage?

There are three types of cartilage: hyaline, fibrous, and elastic cartilage. Hyaline cartilage is the most widespread type and resembles glass. In the embryo, bone begins as hyaline cartilage and later ossifies. Fibrous cartilage has many collagen fibers and is found in the intervertebral discs and pubic symphysis.

What is a bone?

What is bone? Bone is living tissue that makes up the body's skeleton. There are 3 types of bone tissue, including the following: Compact tissue. The harder, outer tissue of bones.

What's another name for cartilage?

In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for cartilage, like: gristle, tissue, synovium, collagen, synovial, spinal-cord, articular, bone, periosteum, myelin and muscle.

Where is the ethmoid?

The ethmoid bone is an unpaired cranial bone that is a significant component of the upper nasal cavity and the nasal septum. The ethmoid bone also constitutes the medial orbit wall.