Gravity plays a large part in opening the jaw, but there are muscles that help forcefully open your jaw. The most important of these is the digastric muscle, which connects from the mastoid process of the temporal bone to the hyoid bone, and then from the hyoid bone to the digastric fossa of the mandible.
The lateral pterygoid muscles open the mouth, or depress the mandible. And the medial pterygoid, temporalis, and masseter close the mouth, or elevate the jaw, or mandible.
The masseter muscle.
both masseter and temporalis :)100%
The largest and most obvious muscle is the Masseter muscle. Some other smaller muscles include the Zygomaticus Major and the Buccinator.
a muscle i dont know of
The internal pterygoid closes the jaw
Masseter
lateral pterygoid
Epicrinium
Opens and closes your lower jaw
The masseter muscle. both masseter and temporalis :)100%
The adductor Muscle
Muscle Joint
Horses chew by moving their lower jaw in an oval pattern because their lower jaw is narrower than the upper jaw. As the jaw closes, it moves from one side to the other. As it opens it returns to the original position.
The masseter IS the functional muscle which closes the mandible (jaw).
THE ORIGIN OF THE TEMPORALIS MUSCLE IS TEMPORAL FOSSA Insertion: Coronid process of the mandible Function/Action: Closes Jaw
The masseter is the main muscle that shuts or closes the jaw.
The pyloric sphincter muscle regulates the flow of chyme from the stomach to the duodenum just a few mL at a time.
The muscle that aids the jaw in closing is the temporalis muscle. The masseter is the muscle that primarily moves the jaw.
The epiglottis is a flap of cartilage that opens and closes the trachea. It is located at the root of the tongue.
closes jaw, elevates and retracts the mandible