Which muscles border the sublingual space inferiorly?

The sublingual space, which is located beneath the tongue, is bordered inferiorly by the mylohyoid muscles. This muscle group forms the floor of the mouth and plays a crucial role in supporting the tongue and facilitating movements necessary for swallowing and speech. The mylohyoid muscles originate from the mandible and insert into a midline raphe, creating a base for the sublingual gland and other structures in the region.

In contrast, the geniohyoid muscles, while also located in the floor of the mouth, are positioned more superiorly and are not responsible for defining the lower boundary of the sublingual space. The masseter muscles, which are primarily involved in mastication, are located laterally to the mandible, and the temporal muscles are a group of muscles involved in closing the jaw located in the temporal region. Therefore, the mylohyoid muscles are the primary structure that provides the inferior border of the sublingual space.