New York Nail Technician License Practice Test

What is the pink fibrous membrane that covers and protects the bone called?

1. Cartilage

2. Periosteum

3. Endosteum

4. Synovium

The correct answer is: Periosteum

The pink fibrous membrane that covers and protects the bone is known as the periosteum. This specialized membrane serves several crucial functions, including providing a surface for the attachment of muscles and tendons through the fibers that penetrate the outer layer. It plays an essential role in bone growth and repair, as it contains osteoblasts (cells involved in bone formation) and a rich supply of blood vessels that nourish the bone tissue. The periosteum also contains sensory nerve endings, which contribute to the bone's ability to sense pain. In contrast, cartilage serves as a smooth surface for joint movement and cushioning between bones, the endosteum lines the inner surface of the bone and is involved in bone remodeling and growth from the inside, and the synovium is a membrane that lines joints and produces synovial fluid to lubricate and nourish the cartilage within the joints. These structures have distinct functions and are not involved in the protective covering of bones like the periosteum is.