Question

In rabbit, hard palate is formed of

• A. Premaxilla, vomer and dentary bones
• B. Premaxilla, maxilla and palatine bones
• C. Sphenoid, nasal and dentary bones
• D. Nasal, maxillae and ethmoid bone

Answer 1

The correct option is B Premaxilla, maxilla and palatine bones

Palate is differentiated into two parts- (i) Hard Palate and (ii) Soft Palate.

The hard palate is anterior part of the palate. lt is made up of Maxilla and palatine bones in human. But in Rabbit it is made of Pre-maxilla, maxilla and palatine bones. On the ventral surface of hard palate, some projection or transverse ridges are present, which are called as palatine rugae. These rugae prevent slipping out of the food from buccal cavity during mastication. These rugae are well developed in carnivorous animals. In rabbit, one pair opening of nasopalatine duct is present at the anterior part of hard palate, these connect the buccal cavity to the nasal passage. Some olfactory receptors are also found in nasopalatine duct, which are called as Jacobsons organ. It makes them aware of the smell of food while chewing.