The group of muscles responsible for opening the mouth and swallowing actions is known as which?

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Study for the City and Guilds Dental Nursing Block 2 Test. Use flashcards and multiple choice questions, each with hints and explanations, to prepare effectively. Get ready for your exam!

Multiple Choice

The group of muscles responsible for opening the mouth and swallowing actions is known as which?

Explanation:
The suprahyoid muscles are the group that sit above the hyoid bone and work to raise the hyoid and the floor of the mouth during swallowing. By moving the hyoid upward and forward, they help position the throat structures for swallowing and also assist in opening the mouth when the hyoid is stabilized by these muscles. The muscles in this group include the digastric (anterior and posterior bellies), mylohyoid, stylohyoid, and geniohyoid. In contrast, the infrahyoid muscles act to lower the hyoid, and the masseter and temporalis are primarily jaw-closing muscles, not involved in opening the mouth.

The suprahyoid muscles are the group that sit above the hyoid bone and work to raise the hyoid and the floor of the mouth during swallowing. By moving the hyoid upward and forward, they help position the throat structures for swallowing and also assist in opening the mouth when the hyoid is stabilized by these muscles. The muscles in this group include the digastric (anterior and posterior bellies), mylohyoid, stylohyoid, and geniohyoid. In contrast, the infrahyoid muscles act to lower the hyoid, and the masseter and temporalis are primarily jaw-closing muscles, not involved in opening the mouth.

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