Fig. (4) Specimen HU O1, medial aspect of the masticatory muscles and the mandibular nerve complex, right block (^*indicates the inferior belly of the lateral pterygoid muscle). 1, Temporalis (pars superficialis). 2, Temporalis (pars profunda, main portion). 3, Temporalis (pars profunda posterior). 4, Ophthalmic nerve (CN V1). 5, Maxillary nerve (CN V2). 6, Trigeminal ganglion. 7, Mandibular nerve (CN V3; main stump). 8, Maxillary artery (pterygoid section). 9, Buccal nerve. 10, Medial pterygoid muscle (main body). 11, Medial pterygoid muscle (upper part). 12, Lingual nerve. 13, Stump of inferior alveolar and auriculotemporal nerves. 14, Middle meningeal artery. 15, Head of condyle (covered by disc). 16, Parotid gland.