Lateral pterygoid muscle above with the buccal branchof the mandibular nerve and maxillary artery emerging between its two heads, the lingual and inferior alveolar branches of the mandibular nerve lower down on the surface of the medial pterygoid muscle.
Deep to the lateral pterygoid muscle the mandibular nerve gives the two roots of the auriculotemporal nerve which pass backwards then unite together to form the nerve that winds medial then posterior to the neck of the mandible to reach the superior pole of the parotid gland.
Otic ganglion between the mandibular nerve and the tensor palate muscle.
Pterygoid plexus of veins are on either side and inside the lateral pterygoid muscle.
Maxillary artery enters the fossa between the necks of the mandible laterally and the sphenomandibular ligament medially with the auriculotemporal nerve above, then the artery passes forwards at the lower edge of the lateral pterygoid muscle then dips between its two heads to enter the pterygo-maxillary fissure. The artery has a variable relation to the lower head of the muscle; either deep or superficial.