AN-D6

During tonsillectomy, care must be taken to avoid injury to which nerve that travels with the stylopharyngeus muscle?

Vagus nerve
Glossopharyngeal nerve
Facial nerve
Hypoglossal nerve

Which of the following statements regarding the intrinsic muscles of the larynx is/are true?

(Multiple Correct Answers)

The cricothyroid is the only intrinsic muscle innervated by the external branch of the superior laryngeal nerve
Posterior cricoarytenoid is the only muscle that abducts the vocal cords
The thyroarytenoid and vocalis muscles function to relax the vocal folds
Lateral cricoarytenoid muscles are responsible for adduction of the vocal cords

A patient presents with hyperacusis following facial nerve injury. Which muscle is most likely paralyzed?

Tensor veli palatini
Stapedius
Tensor tympani
Salpingopharyngeus

Which of the following correctly describes the function of the muscle highlighted in green?

Elevation and abduction
Depression and abduction
Elevation and adduction
Depression and adduction

Which nerve provides parasympathetic innervation to the ciliary muscle?

Oculomotor nerve via the ciliary ganglion
Long ciliary nerves (V1)
Trochlear nerve
Sympathetic fibers from the superior cervical ganglion

Which of the following statements about the muscles of the middle ear is/are true?

(Multiple Correct Answers)

Tensor tympani muscle is innervated by the mandibular division of the trigeminal nerve (CN V3)
Stapedius functions to dampen excessive movement of the stapes
Tensor tympani muscle attaches to the incus and dampens high-frequency sounds
Both tensor tympani and stapedius are located in the inner ear
Stapedius muscle is the smallest skeletal muscle in the human body

A dentist performs an inferior alveolar nerve block and inadvertently punctures the pharyngeal wall. The patient later presents with difficulty initiating swallowing. Which muscle is most likely affected?

Stylopharyngeus
Middle constrictor
Superior constrictor
Inferior constrictor

Which of the following are correct in relation to extraocular muscles of the eye?

(Multiple Correct Answers)

Levator palpebrae superioris and Superior rectus are the only muscles that function in movement of eyelid
Superior oblique muscle is innervated by the Trochlear Nerve
All the recti muscles originate from the common tendinous ring
Lateral rectus is supplied by the Oculomotor nerve
Superior, Medial and Inferior recti muscles cause adduction of eyeball
Lateral rotation of eyeball is caused by Inferior rectus and Inferior oblique muscles

What is the primary action of the muscle shown in green?

Abduction of vocal cords
Relaxation of vocal cords
Adduction of vocal cords
Tension and elongation of vocal cords

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