Final answer:
The mylohyoid nerve supplies both the mylohyoid muscle and the anterior belly of the digastric muscle, contributing to swallowing and movement of the mandible.
Step-by-step explanation:
The mylohyoid nerve not only supplies the mylohyoid muscle but also supplies another muscle called the anterior belly of the digastric muscle. Both the mylohyoid and the digastric muscles are part of the suprahyoid group of muscles. The mylohyoid muscle acts to elevate the floor of the mouth and the hyoid bone, aiding in swallowing, while the anterior belly of the digastric muscle works in concert with the mylohyoid to elevate the hyoid bone and larynx during swallowing and depresses the mandible.