What Are The Anatomical Regions Of A Long Bone?

A long bone has two main regions: the diaphysis and the epiphysis (Figure 6.3. 1). The diaphysis is the hollow, tubular shaft that runs between the proximal and distal ends of the bone. Inside the diaphysis is the medullary cavity, which is filled with yellow bone marrow in an adult.

List Contents

What are the anatomical parts of a long bone?

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. The hollow region in the diaphysis is called the medullary cavity, which is filled with yellow marrow.

What are the anatomical regions of a flat bone?

Flat bone
FMA 7476
Anatomical terms of bone

What are 5 major parts of a long bone?

List five major parts of a long bone. Epiphysis, diaphysis, periosteum, yellow marrow, medullary cavity, compact bone, spongy bone, articular cartilage.


What is an anatomical 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. Cancellous tissue.

What are the anatomical regions of a long bone quizlet?

The major parts of a long bone include epiphysis, articular cartilage, diaphysis, periosteum, medullary cavity, endosteum, and marrow.

What are the four basic parts of the long bones?

  • parts of a long bone.
  • metaphysis. Part of the bone between the epiphysis and the diaphysis; it contains the connecting cartilage enabling the bone to grow, and disappears at adulthood.
  • diaphysis. …
  • distal epiphysis. …
  • proximal epiphysis. …
  • metaphysis.

Where does a long bone 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.

What is the anatomical name for the shaft of a long bone?

The diaphysis is the main or midsection (shaft) of a long bone. It is made up of cortical bone and usually contains bone marrow and adipose tissue (fat). It is a middle tubular part composed of compact bone which surrounds a central marrow cavity which contains red or yellow marrow.

Where is the long bone located?

Long bones are mostly located in the appendicular skeleton and include bones in the lower limbs (the tibia, fibula, femur, metatarsals, and phalanges) and bones in the upper limbs (the humerus, radius, ulna, metacarpals, and phalanges).

Which is a long bone?

A long bone is a bone that has a shaft and 2 ends and is longer than it is wide. … All of the bones in the arms and legs, except the patella, and bones of the wrist, and ankle, are long bones.

What type of bone is arranged in concentric layers?

The compact bone is a dense bone found in the diaphysis. Its repeated pattern is arranged in concentric layers of solid bone tissue. The compact bone can be seen as the layer just underneath the periosteum, color both ends.

What is bone projection?

A projection is an area of a bone that projects above the surface of the bone. These are the attachment points for tendons and ligaments. In general, their size and shape is an indication of the forces exerted through the attachment to the bone.

What are the three parts of a long bone quizlet?

  • Diaphysis. Long main portion of a bone.
  • Epiphysis. End of a long bone.
  • Metaphyses. region of a long bone between the epiphysis and diaphysis.
  • Articular Cartilage. Covers end of bones to prevent friction.
  • Periosteum. …
  • Medullary Cavity. …
  • Endosteum. …
  • Red Bone Marrow.

What are the six major parts of a long bone?

  • Epyphysis. Every long bone is capped with wide areas on each end which are called epiphyses. …
  • Diaphysis. The largest part of any long bone is the long cylindrical middle, called the diaphysis. …
  • Metaphysis. …
  • Medullary Cavity.

Which part of a long bone contains the growth plate?

The epiphyseal plate is the area of growth in a long bone. It is a layer of hyaline cartilage where ossification occurs in immature bones. On the epiphyseal side of the epiphyseal plate, cartilage is formed. On the diaphyseal side, cartilage is ossified, allowing the diaphysis to grow in length.

Where does a long bone grow in length quizlet?

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.

What is the location of the two membranes found in long bones?

The periosteum covers the outside of bones. The periosteum is a membrane that covers the outer surface of all bones, except at the articular surfaces (i.e. the parts within a joint space) of long bones. Endosteum lines the inner surface of the medullary cavity of all long bones.

What is bone growth in length called?

5.2 Appositional bone growth

When bones are increasing in length, they are also increasing in diameter; diameter growth can continue even after longitudinal growth stops. This is called appositional growth.

How do long bones elongate?

IN SUMMARY: Bone Growth and Development

Long bones lengthen as chondrocytes divide and secrete hyaline cartilage. Osteoblasts replace cartilage with bone. Appositional growth is the increase in the diameter of bones by the addition of bone tissue at the surface of bones.

What is known as the long part of the bone that can be found along the arms and legs?

The humerus and the femur are corresponding bones of the arms and legs, respectively. … The head of the humerus is almost hemispherical, while that of the femur forms about two-thirds of a sphere.

Why are bone markings important anatomical landmarks?

Bone markings are projections and depressions found on bones, which help us to identify the location of other body structures, such as muscles. Their importance comes when we try to describe the shape of the bone or to understand how the muscles, ligaments and other structures affect this bone and vice versa.

Which of these tissues is present in a typical long bone?

Long bone
FMA 7474
Anatomical terms of bone

What is a large irregularly shaped projection?

trochanter. large, irregularly shaped projection.

Where are short bones located?

Short bones are shaped roughly as a cube and contain mostly spongy bone. The outside surface is comprised of a thin layer of compact bone. Short bones are located in the hands and feet. The patella (kneecap) is also considered a short bone.

What are mammalian long bones?

The primary structure of the shafts of mammalian long bones is laminar and laminae often remain as the main component. Secondary osteons are a replacement within laminae. … Nearly mature bones switch the kind of primary bone deposited at the peripheral (periosteal) surface from laminar to primary osteonic.

Why doesn’t the periosteum cover the articular cartilage of a long bone?

The periosteum doesn’t cover the portion of bones that contains articular cartilage, which is the cartilage found in joints that keeps the bones from rubbing together. … It is not as tightly packed and contains cells that help in bone growth and repair.

What area of long bone is composed of dense irregular connective tissue?

These cells are part of the outer double layered structure called the periosteum (peri– = “around” or “surrounding”). The cellular layer is adjacent to the cortical bone and is covered by an outer fibrous layer of dense irregular connective tissue (see Figure 6.3. 4a).

Where on a long bone is articular cartilage found quizlet?

Where is cartilage found on the surface of a long bone? Cartilage is found on the proximal and distal epiphysis of the bone where is articulates with other bones.