Question

What is the key difference between lamella and lacunae in anatomy?

a) Lamellae are layers of bone, while lacunae are small cavities containing bone cells.
b) Lamellae are found in cartilage, while lacunae are found in muscle tissue.
c) Lamellae are part of the respiratory system, while lacunae are part of the circulatory system.
d) Lamellae and lacunae are synonymous terms.

Answer 1

The key difference between lamella and lacunae in anatomy is that lamellae are layers of bone, while lacunae are small cavities containing bone cells. Lamellae are found in compact bone and are organized into rings called osteons. Lacunae, on the other hand, are found in both compact and spongy bone and house osteocytes, which are the bone cells.

Step-by-step explanation:

The key difference between lamella and lacunae in anatomy is that lamellae are concentric layers of bone matrix that form around the central Haversian canal in compact bone, while lacunae are small cavities within those layers that house bone cells, specifically osteocytes. In compact bone, the lamellae are arranged in cylindrical structures called osteons, with lacunae situated between the layers of lamellae. The lacunae are connected by tiny channels called canaliculi, which facilitate the exchange of nutrients and waste between the osteocytes and blood vessels located in the central Haversian canal.