Lecture 2 swallowing

Question 1

swallowing

Answer 1

all processes, functions and acts associated with bolus introduction, preparation, transfer, and transport.

Question 2

deglutition

Answer 2

only the acts of bolus transfer and transport from the oral cavity to the stomach.

Question 3

What are the four stages of swallowing?

Answer 3

oral prepataory
oral
pharyngeal
esophageal

Question 4

oral preparatory phase

Answer 4

Containment: holds mouth until ready to swallow

forms bolus

Question 5

Containment in the oral prep. phase

Answer 5

Lips: contains anteriorly

tongue: moves food around in oral cavity, keep together, base of the tongue comes up
velum: before food is lowered, comes down to contain it to keep it out of the larynx

cheeks
soft palate

Question 6

Bolus prep

Answer 6

teeth

tongue

Question 7

What are four things that occur when preparing the bolus?

Answer 7

sensory: what kind of food is it?
Labial Closure
Tongue manipulates bolus: forms the bolus
Chewing occurs when needed

Question 8

What muscles are needed to form the bolus?

Answer 8

muscles of mastication (chewing)
Jaw closing muscles
jaw opening muscles

Question 9

Jaw closing muscles

Answer 9

elevates and closes the jaw
masseter muscle
temporalis
medial pterygoid muscle

Question 10

jaw opening

Answer 10

lateral pterygoid muscle

Question 11

What does the tongue do in oral prep phase?

Answer 11

able to move food around

Question 12

TMJ is important for the oral prep phase because

Answer 12

it allows for rotary chewing while preparing the bolus

Question 13

two types of movement (TMJ)

Answer 13

translation and rotation

Question 14

translation and rotation

Answer 14

side to side (does not do much)

Rotation (tongue)

Question 15

salivary glands

Answer 15

parotid
submandibular
sublingual

Question 16

parotid

Answer 16

wraps around the facial nerve, produces 25% of oral secretion (serous)

Question 17

submandibular

Answer 17

produces 70% of oral secretion, more thinner than thick

both serous and viscous

Question 18

sublingual

Answer 18

produces 5% of oral secretion (viscous)

Question 19

the three types of glands produce salvia at

Answer 19

rate of .1ml/min at rest and up to 4ml/min during active secretion

Question 20

oral phase

Answer 20

starts when tongue begins the posterior movement of the bolus

sides and tip of tongue up

tongue elevation progresses posteriorly

back of tongue lowers allowing food to move down

increase in buccal tension

less than 1 to 1.5 seconds

Question 21

anterior faucial pillar

Answer 21

marks when the pharyngeal phase starts

Question 22

Pharyngeal phase

Answer 22

initiates when bolus passes, as bolus moves through it triggers response

Question 23

pharyngeal phase

Answer 23

• velum elevates and retracts
• hyoid and larynx elevate and move anteriorly
• larynx closes
• tongue base and pharyngeal wall moves toward each other
• pharynx contracts
• UES opens
• last less than 1 second

Question 24

When the velum elevates and retracts

Answer 24

velopharyngeal closure

Question 25

hyoid and larynx elevate and more anteriorly

Answer 25

up and forward