Do the embryological first pharyngeal arches remain?
The pa of the cailage extending from the region of the middle ear to the mandible disappears, but it's sheath forms the anterior ligament of the malleus and the sphenomandibular ligament Ref: Human Embryology, Inderbir Singh, 10th edition, page no: 131
Sphenomandibular ligament
Stylohyoid ligament
Stylomandibular ligament
Styloid ligament
General anatomy