Final answer:
The medial pterygoid muscle and masseter muscle insert at the ramus and angle of the mandible, allowing for movement and force during chewing.
Step-by-step explanation:
The muscles of mastication that insert at the ramus and angle of the mandible are the medial pterygoid muscle and the masseter muscle. The medial pterygoid muscle is responsible for moving the mandible from side to side, while the masseter muscle is the main muscle used for chewing and elevates the mandible to close the mouth. These muscles provide the necessary force and movement for effective mastication.