HOSA Dental Terminology Practice

In dental terminology, which term refers to the supporting layer under mucous membranes?

1. Reticular layer

2. Periosteum

3. Submucosa

4. Epithelial tissue

The correct answer is: Submucosa

The term that refers to the supporting layer under mucous membranes is submucosa. This layer is composed of connective tissue and contains blood vessels, nerves, and glands, playing a crucial role in anchoring the mucous membranes to the underlying structures. The submucosa provides flexibility and support to the mucosa, which enables it to maintain its integrity while allowing for various movements and expansions, such as during swallowing and other activities involving the oral cavity. Understanding the structure of the submucosa is essential in dentistry, as it helps in comprehending how the oral mucosa interacts with the underlying tissues, which can impact procedures like anesthesia administration and surgical interventions. The other terms do not specifically pertain to the layer that directly supports the mucous membranes. The reticular layer is part of the dermis, periosteum refers to the connective tissue surrounding bones, and epithelial tissue constitutes the outer layer of mucous membranes rather than the supporting layer beneath.