Which of the following parts of hard palate is devoid of submucosa?

 # Which of the following parts of hard palate is devoid of submucosa?

A. Anterolateral

B. Posterolateral

C. Raphe

D. Incisive papilla

The correct answer is C. Raphe.

Masticatory mucosa in the oral cavity covers the gingiva and hard palate. In gingiva a separate submucosal layer does not exist as compared to hard palate. Underlying tissue without intervening submucosa and is called as mucoperiosteum. In hard palate, submucosa is absent in regions adjacent to gingiva and midpalatal raphe. In midpalatal raphe, submucosa is absent and dense lamina propria directly attaches to the bone. In anterolateral parts submucosa is rich in fatty adipose tissue and posterolateral regions it is glandular in nature with numerous minor salivary glands. 

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