Where are the osteon systems located?

Compact bone consists of closely packed osteons or haversian systems. The osteon consists of a central canal called the osteonic (haversian) canal, which is surrounded by concentric rings (lamellae) of matrix. Between the rings of matrix, the bone cells (osteocytes) are located in spaces called lacunae.

What is an osteon and where would you find it?

Osteon, the chief structural unit of compact (cortical) bone, consisting of concentric bone layers called lamellae, which surround a long hollow passageway, the Haversian canal (named for Clopton Havers, a 17th-century English physician).

What is the location and function of Haversian canal?

Haversian canals are microscopic tubes or tunnels in cortical bone that house nerve fibers and a few capillaries. This allows bone to get oxygen and nutrition without being highly vascular. These canals also communicate with bone cells using special connections, or canaliculi.

What is located in the middle of osteons?

At the center of each osteon is a central canal (also known as a Haversian canal) through which blood vessels, lymph vessels, and nerves can travel to service and signal the cells throughout the compact bone. Compact bone is sometimes called cortical bone.

What is the function of Osteon?

It provides protection and strength to bones. Compact bone tissue consists of units called osteons or Haversian systems. Osteons are cylindrical structures that contain a mineral matrix and living osteocytes connected by canaliculi, which transport blood. They are aligned parallel to the long axis of the bone.

How is a secondary Osteon formed?

Secondary osteons differ from primary osteons in that secondary osteons are formed by replacement of existing bone. Secondary bone results from a process known as remodeling. In remodeling, bone cells known as osteoclasts first resorb or eat away a section of bone in a tunnel called a cutting cone.

What is the purpose of Osteon?

What is the function of an Osteon?

What is the function of lacunae?

The primary function of lacuna in bone or cartilage is to provide housing to the cells it contains and keeps the enclosed cells alive and functional. In bones, lacunae encase osteocytes; in cartilage, lacunae enclose chondrocytes.

Are found deep in the Diaphyses?

The are found deep in the diaphyses of long bones and are filled with yellow marrow in the adult. Located in the middle of osteons, the contain the blood vessels, and nervous supply of the compact bones. Filled with osteocytes, which are osteoblasts encased in matrix, are found between layers of concentric lamellae.

What are the four parts of an Osteon?

Terms in this set (6)

• Haversian Canal. Central canal of the individual osteon.
• Volksmann’s Canal. Canals that come off the Haversian canal and run horizontal.
• Lacunae. Contains the osteocyte.
• Osteocyte. Within the lacunae.
• Lamella. Space between rows of lacunae.
• Canaliculi. Spider legs that connect lacunae to one another.