Which anatomic structure is closely related to (effectively 'wraps around'/borders) the posterior aspect of the parotid gland?

The parotid gland is situated largely overlying and wrapping around the posterior border of the mandibular ramus (extending from the zygomatic arch above to below the angle of the mandible), with the gland draped partly anterior and partly posterior to this bony landmark — making the ramus a key anatomic relationship for the gland's position and for surgical/anesthetic approaches in that region.