Admission Test for Dental Hygiene (ATDH) Practice

Question: 1 / 400

Describe the function of the temporomandibular joint (TMJ).

Allows the jaw to move up and down and side to side for chewing and speaking

The temporomandibular joint (TMJ) plays a crucial role in the movement of the jaw, facilitating actions necessary for chewing and speaking. This joint, located where the lower jaw (mandible) connects with the skull (temporal bone), allows for a range of motion, including both vertical movement (up and down) and horizontal movement (side to side). This ability enables effective mastication, which is essential for breaking down food, as well as speech articulation, as we rely on precise jaw movements to form sounds and words.

Understanding the TMJ's function emphasizes its importance in daily activities, such as eating and communicating. Other options, like growth of new teeth, nutrient absorption, or dental alignment, do not accurately represent the TMJ's primary role, which centers on facilitating jaw movement rather than directly influencing these other aspects of oral health.

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Facilitates the growth of new teeth

Helps in the absorption of nutrients from food

Connects the upper and lower jaw to enhance dental alignment

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