Question

multiple choice question
what is a lacuna?

○ a hole in the bone through which blood vessels enter and exit
○ a layer of bone matrix
○ a little cluster of chondrocytes
○ a little cavity within a tissue where cells become trapped

Explanation:

A lacuna is a small cavity in tissues like cartilage and bone that houses trapped cells (such as chondrocytes in cartilage or osteocytes in bone). The other options describe different structures: a hole for blood vessels is a nutrient foramen, a bone matrix layer is lamellae, and a chondrocyte cluster is an isogenous group.

Answer:

a little cavity within a tissue where cells become trapped