Deck 55: Mouth and Esophagus

Question 1

CNS control of salivation resides in the salivary nuclei in the

A) Otic ganglion
B) M ed ulla
C) Pons
D) Tectum
E) Hypothalamus

Answer 1

B

Question 2

Se co nd ar y pe ris tals is is ac tiva ted by

A) The swallowing center
B) Relaxation of the lower esophageal sphincter
C) Relaxation of the upper esophageal sphincter
D) C ov er ing of t he glo ttis b y the ep iglo ttis
E) Stretch receptors in the esophagus

Answer 2

E

Question 3

Which of the following enhances salivation?

A) Fatigue
B) Fear
C) Dehydration
D) Sleep
E) Nausea

Answer 3

E

Question 4

The parotid gland secretes

A) Pepsinogen
B) Pe ps in
C) M uc in
D) Serous saliva
E) CCK

Question 5

The swallowing center is located in the

A) Pons
B) M ed ulla
C) Otic ganglion
D) Upper Pharynx
E) Ep iglo ttis

Question 6

Saliva may help heal wounds because it contains

A) Lactoperoxidase
B) Am ylase
C) La cto fe rritin D Gro w th fac tors
E) A and C are correct

Question 7

The primary salivary secretion is produced by

A) The ac inar cells
B) Interc alated duc ts
C) Striate d du cts
D) Interlob ular d ucts
E) Intralob ular d ucts

Question 8

Se co nd ar y pe ris tals is

A) Cannot occur after vagotomy (cutting of the vagus nerve)
B) Is a local reflex
C) Requires stretch of the upper esophageal sphincter
D) Requires contraction of the upper esophageal sphincter
E) Occurs only with liquids

Question 9

Once initiated, swallowing

A) Is sustained by sensory inputs from material in the pharynx
B) Is voluntary
C) Is not a programm ed event
D) Begins with vagal stimulation of the myenteric plexus in the esophagus
E) Ac tiva tes on ly sm oo th m us cle

Question 10

The m ajor salivary glands that produces serous saliva are the

A) Sublingual glands
B) Parotid glands
C) Submandibular glands
D) Supraoptic glands
E) Buccal glands

Question 11

Salivary secretion is generally lowest during

A) Nausea
B) The interdigestive phase
C) Public speaking
D) Sleep
E) Tasting of bitter substances

Question 12

Parasympathetic stimulation

A) Increases mucus saliva production
B) Decreases mucus saliva production
C) Increases serous saliva production
D) Decreases serous saliva production
E) Has no effect on salivary secretion

Question 13

Which of the following is NOT a major physiological function of chewing?

A) Chewing reduces particle size to enable swallowing
B) Chewing reduces particle size to enhance surface area for digestion
C) Ch ew ing relax es n erv ou s pe op le
D) Chew ing mixes food with saliva
E) Chewing reduces "sharp edges" of vegetative matter

Question 14

Which of the following inhibits salivation?

A) Sm ell of food
B) Nausea
C) Taste of food
D) Sleep
E) Me cha nica l stim ulation of the oral c avity

Question 15

Saliva helps prevent infections due to its content of each of the following EXCEPT

A) La cto fe rrin
B) Lysozymes
C) Lactoperoxidase -
D) HCO 3
E) IgA

Question 16

Sympathetic stimulation

A) Increases mucus saliva production
B) Decreases mucus saliva production
C) Increases serous saliva production
D) Decreases serous saliva production
E) Has no effect on salivary secretion

Question 17

Relaxation of the lower esophageal sphincter during swallowing

A) Is part of the swallowing program
B) Requires stretch of the esophagus
C) Requ ires an intact vagus nerve
D) Is a local response to stretch of the sphincter
E) Especially requires relaxation of the longitudinal muscle layer