7.3: Activity 2

Identification of Components of the Haversian System

In this activity, you will explore and identify the key components of the Haversian system (also known as the osteon), which is essential for understanding the structure and function of compact bone tissue. This system plays a crucial role in bone health and nutrient delivery.

Pick up the Osteon model to identify the parts/structures of compact bone shown in the image below. Each structure is indicated with a letter. Place the corresponding anatomical name in the table below next to the letter highlighting that structure.

Figure \(\PageIndex{1}\) presents a detailed anatomical model of compact bone tissue, focusing on its microscopic structure. The model includes several key features:

• Osteons: Cylindrical units that form the structural framework of compact bone. Each osteon consists of concentric layers of bone matrix called lamellae.
• Haversian Canals: Central channels within each osteon that contain blood vessels and nerves, facilitating nutrient and waste exchange.
• Other Microscopic Features: Although the text labels are not visible, arrows point to additional structures likely including:
  • Lacunae: Small spaces housing osteocytes (bone cells).
  • Canaliculi: Tiny channels connecting lacunae, allowing communication between osteocytes.
  • Interstitial Lamellae: Layers of bone matrix found between osteons.