Is the metaphysis the same as the epiphyseal line?

The metaphysis is the neck portion of a long bone between the epiphysis and the diaphysis. It contains the growth plate, the part of the bone that grows during childhood, and as it grows it ossifies near the diaphysis and the epiphyses….

What is the difference between metaphysis and epiphyseal plate?

The metaphysis is an area between the diaphysis and epiphysis. Bone is developed from the growth plate, matures, and remodels in the metaphysis of growing bone. The epiphyseal plate and the metaphyseal region are the major growth compartments of the bone.

How are the epiphyseal line and the epiphyseal plate related?

The plate is only found in children and adolescents; in adults, who have stopped growing, the plate is replaced by an epiphyseal line. This replacement is known as epiphyseal closure or growth plate fusion.

What is the epiphyseal line of a long bone?

The ends of a long bone contain spongy bone and an epiphyseal line. The epiphyseal line is a remnant of an area that contained hyaline cartilage that grew during childhood to lengthen the bone.

What is metaphysis of a bone?

The metaphysis is the region where the epiphysis joins the diaphysis; in a growing bone this corresponds to the calcified layer of the epiphyseal plate together with the interdigitating bone (see Figure 4.19). When a long bone has achieved its mature length, longitudinal growth in the epiphyseal plates ceases.

What type of bone is the metaphysis?

long bones
The metaphysis is the trumpet-shaped end of long bones. It has a thinner cortical area and increased trabecular bone and is wider than the corresponding diaphyseal part of the bone.

How does long bone grow in length and width?

Long bones lengthen at the epiphyseal plate with the addition of bone tissue and increase in width by a process called appositional growth.

Is a long bone named for its length?

Long bones include the bones of the upper and lower extremities except the finger and toes. Long bones include the bones of the upper extremities except the bones of the ankle and wrist. A long bone is named for its length.

How does a long bone grow in length?

Length: Grows in length by multiplication of cells in the epiphyseal plate or cartilage. The cartilage cells divide and increase in number. The zone of active division in the epiphyseal plate lies towards the epiphyses. Eventually these cartilage cells are replaced by osteocytes, increasing the length of the bone.

Where is the metaphysis in a long bone?

The metaphyses (singular: metaphysis) are the wide portions of long bones and the regions of the bone where growth occurs. Growth occurs at the section of the metaphysis that is adjacent to the growth plate (physis). The metaphysis is located between the diaphysis and epiphysis.

What is metaphysis function?

function in bone structure This region (metaphysis) functions to transfer loads from weight-bearing joint surfaces to the diaphysis. Finally, at the end of a long bone is a region known as an epiphysis, which exhibits a cancellous internal structure and comprises the bony substructure of the joint surface.

How does bone grow How do long bones grow in length?

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.

What is the metaphysis of a bone?

The metaphysis is the narrow portion of a long bone between the epiphysis and the diaphysis. It contains the growth plate, the part of the bone that grows during childhood, and as it grows it ossifies near the diaphysis and the epiphyses.

What does the epiphyseal plate do in the metaphysis?

Epiphyseal plate allows the growth of diaphysis till the teenage. This increases the length of diaphysis, while maintaining the thickness of epiphyseal plate cartilage. Subsequently, one may also ask, is the epiphyseal plate in the metaphysis?

What is the morphology of the epiphysial growth plate?

The growth plate has a very specific morphology in having a zonal arrangement as follows: Chondrocytes undergo apoptosis. Cartilagenous matrix begins to calcify. Osteoclasts and osteoblasts from the diaphyseal side break down the calcified cartilage and replace with mineralized bone tissue. Masson Goldner trichrome stain of rabbit epiphysial plate.

What is epiphyseal closure?

The epiphyseal line is bone formed inside the epiphyseal plate when bone is fully grown. The cartilage inside the epiphyseal plate is substituted through bone around the ages of 18-21 when a bone ceases to grow lengthwise. This phenomenon of substitution is called epiphyseal closure.