Final answer:
The two layers of masticatory mucosa that cover bony ridges in the oral cavity are the keratinized stratified squamous epithelium and the lamina propria.
Step-by-step explanation:
The two layers of masticatory mucosa that cover bony ridges in the oral cavity are the keratinized stratified squamous epithelium and the lamina propria. The keratinized stratified squamous epithelium is the outer layer and provides a protective barrier, while the lamina propria is the underlying connective tissue that supports the epithelium.