Histology of Bone Tissue and Bone Cells

Front

What is the structure of lamellae in circumferential bone tissue?

Back

Circumferential lamellae are layers of bone matrix that encircle the outer and inner surfaces of the bone, providing strength and support.

Front

What are trabeculae in spongy bone tissue?

Back

Trabeculae are the small, rod-like structures that make up the latticework of spongy bone, providing structural support and housing bone marrow.

Front

What is the Haversian system?

Back

The Haversian system, also known as an osteon, is the fundamental functional unit of compact bone, consisting of a central canal surrounded by concentric lamellae.

Front

What is the function of the central Haversian canal?

Back

The central Haversian canal contains blood vessels and nerves that supply the bone tissue.

Front

What are canaliculi?

Back

Canaliculi are tiny channels that connect lacunae, allowing for communication and nutrient exchange between osteocytes.

Front

What is the difference between interstitial and concentric lamellae?

Back

Interstitial lamellae are remnants of old osteons found between newer osteons, while concentric lamellae are layers of bone matrix that form the structure of an osteon.

Front

What is the role of osteocytes in bone tissue?

Back

Osteocytes are mature bone cells that maintain bone tissue and communicate with other bone cells through canaliculi.

Front

What are perforating (Volkmann's) canals?

Back

Perforating canals are channels that run perpendicular to Haversian canals, connecting them and allowing for the passage of blood vessels and nerves.

Front

What is the medullary cavity?

Back

The medullary cavity is the central cavity within long bones that contains bone marrow, which produces blood cells.

Front

What is the composition of bone matrix?

Back

Bone matrix is composed of organic components (collagen fibers and proteins) and inorganic components (hydroxyapatite crystals), providing strength and flexibility.