What are osteons connected by?

What are osteons connected by?

canaliculi
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. Each osteon consists of lamellae, which are layers of compact matrix that surround a central canal called the Haversian canal.

What connects to central canals together?

The central canal (also known as ependymal canal) is the cerebrospinal fluid-filled space that runs through the spinal cord. The central canal lies below and is connected to the ventricular system of the brain, from which it receives cerebrospinal fluid, and shares the same ependymal lining.

How are Haversian canals connected?

The Haversian canals surround blood vessels and nerve cells throughout bones and communicate with osteocytes (contained in spaces within the dense bone matrix called lacunae) through connections called canaliculi.

What is in the central canal formed by osteons in compact bone?

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.

What are the small passageways that connect the central canal to the osteocytes?

Osteocytes send long, slender cell processes down narrow passageways called canaliculi. These passageways connect osteocytes both with each other and with the blood supply of the osteon. Osteocytes lie in small cavities called lacunae.

What is the name of the canal that connects osteons to other osteons?

Osteons are connected to each other and the periosteum by oblique channels called Volkmann’s canals or perforating canals.

How are osteons formed?

The process of the formation of osteons and their accompanying Haversian canals begins when immature woven bone and primary osteons are destroyed by large cells called osteoclasts, which hollow out a channel through the bone, usually following existing blood vessels.

Where are osteons located?

In the cortex and subjacent to articular cartilage (subchondral bone), bone is organized into osteons (also called Haversian systems), which are cylinders of concentric layers of lamellae that are oriented parallel to the longitudinal axis of the bone and contain centrally located vessels and nerves (Fig.

Where are the transverse vessels of the osteon located?

Transverse vessels, which run perpendicular to the long axis of the cortex, are called Volkmann canals; Volkmann canals connect adjacent osteons and also connect the blood vessels of the Haversian canals with the periosteum, the tissue covering the bone’s outer surface.

Where are the osteons located in compact bone?

Compact Bone 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.

Where are the canaliculi located in the bone?

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. Small channels ( canaliculi) radiate from the lacunae to the osteonic (haversian)…

What are the interstitial lamellae in the osteon?

The spaces between adjacent osteons are filled with interstitial lamellae, layers of bone that are often remnants of previous Haversian systems. Transverse vessels, which run perpendicular to the long axis of the cortex, are called Volkmann canals; Volkmann canals connect adjacent osteons and also connect the blood vessels…