What are the lamellae and the lacunae?

The lamellae are the concentric circles around the Haversian canal; they are a bone matrix formed from calcium, phosphorus salts and fibres. The lacunae are small spaces in the lamellae which provide an area for bone cells or osteocytes. This is the key difference between lamellae and lacunae.

What connects lacunae and central canal?

Each central canal, with the lamellae and osteocytes surrounding it, is called an osteon, or Haversian system. Osteocytes, located in lacunae, are connected to one another by processes in canaliculi. The canaliculi give the osteon the appearance of having tiny cracks in the lamellae.

What is the lamellae in the bone?

Each osteon consists of concentric layers, or lamellae, of compact bone tissue that surround a central canal, the haversian canal. The haversian canal contains the bone’s blood supplies. Near the surface of the compact bone, the lamellae are arranged parallel to the surface; these are called circumferential lamellae.

Is lamellae a bone matrix?

Compact 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.

What is the purpose of the lamellae?

In fishes, gill lamellae are used to increase the surface area between the surface area in contact with the environment to maximize gas exchange (both to attain oxygen and to expel carbon dioxide) between the water and the blood.

What is the difference between lacunae and lamellae and canaliculi?

Key Difference – Lamellae vs Lacunae. They are Harvesian canal, Lamellae, Lacunae and canaliculi. The lamellae are the concentric circles around the Haversian canal; they are a bone matrix formed from calcium, phosphorus salts and fibres. The lacunae are small spaces in the lamellae which provide an area for bone cells or osteocytes.

Where are the lacunae located in the bone?

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) canal to provide passageways through the hard matrix.

What are the concentric lamellae of osteon?

-Each osteon consists of concentric lamellae arranged around a central canal or a Haversian canal. -The concentric lamellae are circular plates of the mineralized extracellular matrix of increasing diameter or surrounds a network of blood vessels and nerves located in the central canal.

What is the central canal in a compact bone?

Compact 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)…