College of Massage Therapists of British Columbia (CMTBC) Practice Exam

Which cells are responsible for the secretion of mucus in epithelial tissues?

1. Chondrocytes

2. Fibroblasts

3. Goblet cells

4. Adipocytes

The correct answer is: Goblet cells

Goblet cells are specialized epithelial cells known for their role in producing and secreting mucus. They are typically found within the epithelial lining of various organs, such as the intestines and the respiratory tract. The mucus they secrete serves several important functions: it lubricates surfaces, traps pathogens and debris, and provides a protective barrier against mechanical damage and chemical irritants. Chondrocytes, fibroblasts, and adipocytes have distinct functions that do not involve the secretion of mucus. Chondrocytes are responsible for the maintenance and production of cartilage matrix components. Fibroblasts are primarily involved in the synthesis and maintenance of the extracellular matrix and play a crucial role in tissue repair. Adipocytes are specialized cells for storing fat and do not participate in mucus production. Each of these cell types serves vital functions in different contexts within the body, but they do not contribute to the secretion of mucus, clearly distinguishing goblet cells as the correct answer for this question.