anatomy and physiology of the throat

Question 1

What are the muscles of mastication

Answer 1

Temporalis
Masseter
Medial pterygoid
Lateral pterygoid

Question 2

What innervates the muscles of mastication

Answer 2

Mandibular branch of the trigeminal nerve - CN V3

Question 4

Describe the innervation of the tongue

Answer 4

Chorda tympanic branch of the facial nerve innervates the anterior 2/3 of the tongue (CN VII)

Glossopharyngeal nerve innervates taste to the posterior 1/3 of the tongue (CN IX)

Question 6

What does the parotid duct open into in the mouth

Answer 6

Buccal mucosa opposite the 2nd molar

Question 7

Describe innervation of the salivary glands

Answer 7

Submandibular and sublinguial innervated by facial nerve (CNVII)

Parotid innervated by the glossopharyngeal nerve (CN IX)

Question 8

What is the function of the soft palate and the uvula

Answer 8

Prevent regurgitation of food into the nasopharynx during swallowing by closing against the posterior pharyngeal wall

Question 9

What innervats the sensation of the pharynx

Answer 9

Glossopharyngeal (CN IX)and vagus nerve (CN X)

Question 10

What innervates the pharyngea muscles

Answer 10

Vagus nerve

Question 12

What is the motor innervation of the larynx muscles

Answer 12

Recurrent laryngeal nerve

Question 13

What innervates sensation to the larynx

Answer 13

Vagus nerve:

Above vocal cords - superior laryngeal nerve

Below vocal cords - recurrent laryngeal branch