Q1-Major Functions of the Masticatory System Flashcards

1
Q

To close tight, as to bring the mandibular teeth into contact with the teeth in the maxilla

A

occlude

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2
Q

4 functions of the masticatory system

A
  1. mastication
  2. swallowing
  3. speech
  4. respiration and expression
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3
Q

True or False

All functional movements are not highly coordinated

A

False; they ARE highly coordinated

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4
Q

Teeth, periodontal ligaments, lips, tongue, cheeks and palate all make up the ______ input

A

sensory

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5
Q

The sensory input is integrated in the ______ _____ ______

A

central pattern generator (CPG)

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6
Q

A pool of neurons that controls rhythmic muscle activity and is responsible for the precise timing of activity between antagonistic muscles so that specific function can be carries out

A

central pattern generator (CPG)

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7
Q

chewing stroke

A

mastication

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8
Q

Mastication is the ________ control separation and closure of teeth, under control of the ______, _____-shaped in movement, closing movement in 2 phases; ______ and _______

A

rhythmic
CPG
tear
crushing and grinding

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9
Q

As the teeth approach each other, the ______ displacement is lessened

A

lateral

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10
Q

Incisors are slightly _____ to intercuspal position at opening and returns from a posterior position

A

anterior

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11
Q

The first molar traced on the side the mandible moves (working side); the molar is slightly ______ at opening and _______ at closing

A

anterior

posterior

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12
Q

The chewing stroke on the non-working side; the first molar drops from IP vertically with (little/a lot) movement, the final stage of closing stroke is almost ________; the condyle moves _______ during opening and follows the same pathway on its return

A

little/no
vertical
anteriorly

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13
Q

During chewing stages;

  1. the mandible moves _____ during incising
  2. less/more forward movement needed after incision of food
  3. ______ of food is concentrated on posterior teeth
  4. movement of the ________ in the saggital plane varies according to the side the person is chewing
  5. _______ movement of the mandible relates to the stage of mastication
  6. great ______ movement when food is initially introduces in the mouth and less as food is broken
  7. lateral movement varies according to _____ _____
A
  1. forward
  2. less
  3. crushing
  4. 1st mandibular molar
  5. lateral
  6. lateral
  7. food consistency
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14
Q

Cusps in children are _____ resulting in more pronounced lateral movement

A

steeper

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15
Q

______ food creates broader chewing strokes; chewing ______ produces a wider chewing stroke

A

harder (carrot)

gum

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16
Q

The majority of people chew with one side; the side with ______ tooth contacts

A

greater

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17
Q

few/many contacts occur during the initial stage of mastication; there is an _______ of tooth contacts as food is broken down

A

few

increase

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18
Q

Two types of contacts; ______ and ______

A

gliding

single

19
Q

Occurs as cuspal inclines pass each other during opening and grinding

A

gliding contact

20
Q

occurs in maximum intercuspal position (MI)

A

single contact

21
Q

True or False

tooth position dictates where the condyle lays

22
Q

Tall cusps and deep fossa promote predominately _____ chewing stroke

23
Q

flattened or worn teeth promote a ________ chewing stroke

24
Q

If posterior contacts in undesirable lateral movement, the malocclusion produces an _____ and less ______ chewing stroke

A

irregular

repeatable

25
True or False | Men and Women have roughly the same bite force
False; men bite with more force
26
The maximum biting force is reported at _____ pounds
975 lbs
27
the molars can take ______ more force than the incisors
3x (more root/muscle support)
28
biting force increases with _______ and ______
age | practice
29
greatest amount of force during mastication is places on the ______ _____ and ____ ____ areas
2nd premolar | 1st molar
30
subjects with complete dentures can only apply _____ the biting force than subjects with natural teeth
1/4th
31
True or False | soft tissue doesn't impact mastication
false; soft tissue play an important role during mastication
32
______ guide and control the intake of food and seal the oral cavity
lips
33
_____ is used to taste and maneuver the food within the oral cavity, also sweeps the teeth
tongue
34
_____ like the ______ help position the bollus of food in the surfaces of the teeth
muscles | buccinator
35
A series of coordinated muscular contractions that moves a bolus of food from the oral cavity through the esophagus to the stomach
swallowing
36
during swallowing teeth come together into maximum intercuspation to stabilize the mandible in order for the supra hyoid and infra hyoid muscles to contract and control proper movement of the hyoid in order to swaller
somatic swallow
37
occurs in infants (no posterior teeth) and adults with no teeth; the mandible is braced by placing the tongue forward and between the dental arches or gum pads
visceral swallow
38
tooth contact occurs _____ times longer during swallowing than during mastication
three
39
the force applied on teeth during swallowing is ________ than during mastication
stronger
40
swallowing occurs about _____ times during a 24/hr period
590
41
"____" sound is used to evaluate the amount of incisal display at rest
"M"
42
"___" or "____" sound = length of central incisors and lingual tilt of incisal third
"F" or "V"
43
"___" sound = closest speaking space where the incisal and occlusal surfaces of teeth don't touch
"S"