CMT Orofacial Anatomy & Physiology 3

Question 1

The orbicularis oris muscle is classified as which type of muscle?

Accepted Answer

Sphincter muscle

Answer

The orbicularis oris acts as a sphincter, encircling the mouth opening to compress and close the lips.

Question 2

Which structure separates the oral cavity from the nasal cavity?

Accepted Answer

Both hard and soft palate

Answer

Both the hard palate (anterior bony portion) and soft palate (posterior muscular portion) together form the roof of the mouth and floor of the nasal cavity.

Question 3

The hypoglossal nerve (CN XII) provides motor innervation to all tongue muscles EXCEPT which one?

Accepted Answer

Palatoglossus

Answer

The palatoglossus is innervated by the vagus nerve (CN X) via the pharyngeal plexus, making it the exception among tongue muscles.

Question 4

In the context of orofacial myology, the 'nasolabial fold' is formed by which landmark?

Accepted Answer

Crease between cheek and upper lip

Answer

The nasolabial fold is the groove running from the sides of the nose to the corners of the mouth, formed where cheek tissue meets the upper lip.

Question 5

Which muscle elevates the hyoid bone and assists in swallowing?

Accepted Answer

Mylohyoid

Answer

The mylohyoid elevates the hyoid bone and floor of the mouth, assisting in the oral and pharyngeal phases of swallowing.

(CMT) Certified Myofunctional Therapist Practice Test

(CMT) Certified Myofunctional Therapist Practice Test

CMT Orofacial Anatomy & Physiology 3