Final answer:
The primary palate, also known as the hard palate, is formed by the palatine process of the maxillary bones and the horizontal plate of the palatine bones.
Step-by-step explanation:
The primary palate is made of the palatine process of the maxillary bones and the horizontal plate of the palatine bones. This bony structure forms the roof of the mouth and the floor of the nasal cavity. It serves as a crucial part of the skull that separates the oral and nasal cavities, allowing for efficient mastication and respiration.
Developmentally, the hard palate results from the fusion at the midline of the horizontal plates from the right and left palatine bones and the palatine processes of the maxilla bones. A defect in this process can lead to cleft palate, a condition that requires surgical intervention for correction.