The posterior border presents a deep groove, the edges of which are serrated for articulation with the medial pterygoid plate of the sphenoid.
32.
The insertion joins the masseter muscle to form a common tendinous sling which allows the medial pterygoid and masseter to be powerful elevators of the jaw.
33.
The pterygoid bones extend in the upper jaw and enclose small interpterygoid vacuities that are present on each side of the cultriform processes of the parasphenoids.
34.
It also contains the submandibular and parotid salivary gland as well as the muscles of mastication ( the masseter, pterygoid, and temporalis muscles ).
35.
When he showed his finding to some anatomy experts, he said, they thought it was the medial pterygoid until he pointed out that muscle separately.
36.
Unlike the other three muscles of mastication, the lateral pterygoid is the only muscle of mastication that assists in depressing the mandible ( opening the jaw ).
37.
Each process consists of a medial pterygoid plate and a lateral pterygoid plate, the latter of which serve as the origins of the sphenoid and maxillary bones.
38.
Each process consists of a medial pterygoid plate and a lateral pterygoid plate, the latter of which serve as the origins of the sphenoid and maxillary bones.
39.
The superior portion of the pterygoid processes are fused anteriorly; a vertical groove, the pterygopalatine fossa, descends on the front of the line of fusion.
40.
Then, a pterygoid chisel, which is a curved chisel, is used on the left and right side of the maxilla to detach the pterygoid palates.
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