Lacunae

Definition

Lacunae are small cavities within the bone matrix that house osteocytes. These spaces play a critical role in maintaining bone health and structure.

5 Must Know Facts For Your Next Test

1. Lacunae contain osteocytes, which are mature bone cells.
2. They are interconnected by tiny channels called canaliculi.
3. Lacunae are found within the lamellae of compact bone.
4. The arrangement of lacunae allows for efficient nutrient and waste exchange between osteocytes and blood vessels.
5. Lacunae help maintain the strength and integrity of bones by housing cells that regulate mineral content.

Review Questions

• What type of cell is housed within a lacuna?
• How do lacunae communicate with each other within the bone matrix?
• Describe the location of lacunae in compact bone.

Related terms

Osteocyte: A mature bone cell found within a lacuna.

Canaliculi:

Tiny channels that connect lacunae and allow for communication between osteocytes.

Lamellae: Thin layers of bone tissue that make up the structure of compact bone, where lacunae are located.