Lateral Surface of the Lateral Plate is the attachment for the Lower head of the Lateral pterygoid.
The upper head attaches at the skull base.
Inserts into the mandibular head and TMJ. Helps protract the jaw, so is vital in opening the mouth. (all other muscles important in closing the mouth).
The medial surface of the lateral pterygoid plate gives of the medial pterygoid. The lateral surface of the lateral pterygoid plate gives of the lateral pterygoid.
The lower head of the medial pterygoid is from the maxillary tuberculum.
It acches to the internal aspect of the masseter just above the mylohyoid groove.
The Buccal nerve passes between the two heads of the lateral pterygoid.
The lingual nerve and inferior alveolar pass between the lateral and medial pterygoid.
Inserts into the coronoid process.
Receives blood supply from the anterior and posterior deep temporal arteries.
Also receives 2 nerves from the anterior division of the mandibular nerve - maybe because it has vertical fibres that chomp and then horizontal fibres that retract the mandibular head?
Note The Muscle attaches to the INFERIOR temporal Line, whilst its fascia drapes down over it hanging form the higher SUPERIOR temporal line.
The muscle narrows from its fan like belly into a tendon that runs under the zygomatic arch.
Superficial head arises from anterior 2/3rds of the zygomatic arch border.
Intermediate head arises from the middle third of the arch.
Deep part arises from Deep surface of the arch.
A branch of superficial temporal runs between anterior 2/3ds (Artery between anterior 2'3ds)
Masseteric nerve runs between posterior 2/3rds.