speech and swallowing

Question 1

what are the three stages of deglutition?

Answer 1

oral, pharyngeal, oesophageal

Question 2

which nerves is the hard palate supplied by?

Answer 2

the pterygopalatine ganglion

greater petrosal nerve (secretory motor) & V2 (sensory)

Question 3

what muscles does CN XII (hypoglossal nerve) innervate?

Answer 3

hypoglossal nerve (CN XII) innervates all extrinsic tongue muscles (genioglossus, hyoglossus, styloglossus)

*except palatoglossus (CN X0

Question 4

what is the course of the hypoglossal nerve (CNXII)?

Answer 4

leaves the skull via the hypoglossal canal and descends in the carotid sheath

Question 5

what are the sensory and motor components of the gag reflex?

Answer 5

sensory: (CN IX) glossopharyngeal nerve conveys sensory info from the posterior 1/3 of tongue and naso/oropharynx
motor: CN X vagus nerve

Question 6

what happens to the uvula is the vagus nerve is damaged (CN X)?

Answer 6

uvula deviates away from damaged side

Question 7

whch nerves leave the brain via the jugular foramen?

Answer 7

CN X (vagus nerve), CN XI (accessory nerve), and internal jugular vein