QUIZ 1

Question 1

CN I

Answer 1

Olfactory

Question 2

CN VII

Answer 2

Facial

Question 3

CN IX

Answer 3

Glossopharyngeal

Question 4

CN X

Answer 4

Vagus

Question 5

CN V

Answer 5

Trigeminal

Question 6

CN VI

Answer 6

Abducens

Question 7

CN XII

Answer 7

Hypoglossal

Question 8

CN XI

Answer 8

Spinal Accessory

Question 9

Sensory CN involved in oral prep

Answer 9

I, VII, IX, X

Question 10

Motor CN involved in oral prep

Answer 10

V, VI

Question 11

Mastication muscles

Answer 11

Lateral pterygoid (depressor) masseter, temporalis, and medial pterygoid (elevators)

Question 12

Oral prep part 1

Answer 12

Food enters oral cavity and taste, temp, and pressure receptors are stimulated via saliva, and during mastication.

Question 13

Oral prep part 2

Answer 13

Mastication occurs through coordinated jaw movements and tongue movements to shape and hold bolus for transport

Question 14

Oral stage part one

Answer 14

Tongue tip elevates and touches hard palate at alveolar ridge, holding bolus against hard palate (extrinsic muscles) CN XII ; creates downward slope for posterior tongue to propel bolus into pharynx

Question 15

Oral stage part 2

Answer 15

Central trough is formed by tongue with dors edges to hole bolus. (Intrinsic muscles) CN XII

Question 16

extrinsic tongue muscles

Answer 16

Styloglossus, genioglossus, CN XII

Question 17

Oral prep part 3

Answer 17

Velum lifts and seals off nasal cavity during process, respiration ceases before posterior tongue movement. Tongue base connects with velum creating positive pressure to be applied to the bolus tail.

Question 18

Muscles responsible for velum lift

Answer 18

Levator velipalatini , tensor velipalitini

Question 19

When does pharyngeal phase begin

Answer 19

When bolus makes contact with palatoglossal arch

Question 20

CN involved in pharyngeal phase

Answer 20

V, VII, IX, X, XI, XII

Question 21

Vocal folds during pharyngeal phase

Answer 21

Adduct via lateral cricoaritenoid, lateral arytenoid, and oblique arytenoid

Question 22

Epiglottis during pharyngeal phase

Answer 22

Retro version of epiglottis : thyroepiglottic ligament and posterior tongue contraction; epiglottis moves to cover aditus

Question 23

Hyoid during pharyngeal phase

Answer 23

Swiftly moves superiorly and anteriorly towards mandible via suprahyoid muscles

Question 24

Pharyngeal peristalsis

Answer 24

“Stripping wave”. Once bolus is in pharynx, superior, middle, and inferior pharyngeal constrictors are activated sequentially, narrowing and shortening pharynx. AIDS bolus down pharynx.

Question 25

How does bolus enter UES

Answer 25

Pressure from hyolaryngeal excursion, and facilitated by cricopharyngeus muscle (CN X), opens UES to let bolus in

Question 26

Esophageal stage

Answer 26

Peristalsis is triggered by CN X and bolus is moved through esophagus by stripping wave as seen in pharynx. Relaxation of lower esophageal sphincter allows bolus into stomach