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FAQ: What are the Epiphyses?

epiphysis, expanded end of the long bones in animals, which ossifies separately from the bone shaft but becomes fixed to the shaft when full growth is attained. The epiphysis is made of spongy cancellous bone covered by a thin layer of compact bone.
The epiphysis is therounded end of a long bone, at its joint with adjacent bone (s). Between the epiphysis and diaphysis (the long midsection of the long bone) lies the metaphysis, including the epiphyseal plate (growth plate).MeSH: Part of: Pronunciation: TA98:

What is the epiphysis and its function?

Epiphysis Definition – Epiphysis is the rounded end of a long bone, its primary function is to connect adjacent bones to form joints. The diaphysis, or shaft, of the long bone, is another prominent feature. There is another part of the long bone between the epiphysis and the diaphysis, which we call metaphysics.

What are the 4 types of epiphysis?

Types of Epiphysis

  • Pressure epiphysis: o Is present at the ends of the long bone. o Is articular in nature (involved in formation of joints).
  • Traction epiphysis: o Is produced due to the pull of the muscle and therefore provide attachment to the muscle/s. o Is non-articular.
  • Atavistic epiphysis: •
  • Aberrant epiphysis: •
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Where are the epiphyses?

The epiphysis lies between the growth plate (physis) and the joint at the end of the bone (Figure 8). In mice and humans, most tubular bones develop an epiphysis at both ends. Some bones, such as the phalanges and the metacarpal and metatarsal bones, ordinarily form this structure at one end only.

How many types of epiphysis are there?

Structure. 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).

What are Epiphyses filled with?

The epiphyses, which are wider sections at each end of a long bone, are filled with spongy bone and red marrow. The epiphyseal plate, a layer of hyaline cartilage, is replaced by osseous tissue as the organ grows in length. The medullary cavity has a delicate membranous lining called the endosteum.

What occurs in the epiphysis?

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.

What are joints anatomy?

A joint is an articulation between two bones in the body and are broadly classified by the tissue which connects the bones. The three main types of joints are: synovial, cartilaginous and fibrous. Fibrous joints have fibrous tissue joining the bone and these joints are typically very strong.

Whats is cartilage?

Cartilage is the main type of connective tissue seen throughout the body. It serves a variety of structural and functional purposes and exists in different types throughout our joints, bones, spine, lungs, ears and nose.

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What are the two types of bone marrow and their functions?

There are actually two types of bone marrow:

  • Red bone marrow helps produce blood cells.
  • Yellow bone marrow helps store fat.

What covers the epiphyses of long bones?

The epiphyseal plate exists only in young growing long bones and aloows them to grow in length. The long bone is entirely covered by the periosteum except where the articular cartilage coats the epiphysis.

What happens to epiphyseal plates at puberty?

Estrogen and testosterone release at puberty initiates closure of the epiphyseal plates. When bone growth is complete, the epiphyseal cartilage is replaced with bone, which joins it to the diaphysis. Fractures of the epiphyseal plates in children can lead to slow bone growth or limb shortening.

What is 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.

What is proximal epiphysis?

The proximal epiphysis is the end of the long bone closest to the center of the body. The distal epiphysis is located at the end of the long bone that is farther away from the center of the body.

What is secondary epiphysis?

A secondary ossification center is the area of ossification that appears after the primary ossification center has already appeared – most of which appear during the postnatal and adolescent years. Most bones have more than one secondary ossification center. In long bones, the secondary centers appear in the epiphyses.

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What separates the diaphysis from the epiphysis?

During bone growth the diaphysis and epiphysis are separated by the growth plate (also known as the epiphyseal line or physis) which fuses later in life. The zone adjacent to the growth plate on the diaphyseal side is called the metaphysis.

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