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Flashcards in packet 18 Deck (21)
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1
Q

Lips and cheeks—–contains buccinator muscle that keeps food between upper & lower teeth
Vestibule—area between cheeks and teeth
Oral cavity proper—the roof = hard, soft palate and uvula
floor = the tongue

A

mouth

2
Q

Pharyngeal Arches

two skeletal muscles

A

Palatoglossal muscle

Palatopharyngeal muscle

3
Q

extends from palate to tongue
forms the first arch
posterior limit of the mouth

A

Palatoglossal muscle

4
Q

extends from palate to pharyngeal wall
forms the second arch
behind the palatine tonsil

A

Palatopharyngeal muscle

5
Q

Parotid below your ear and over the masseter
Submandibular is under lower edge of mandible
Sublingual is deep to the tongue in floor of mouth
All have ducts that empty into the oral cavity

A

salivary glands

6
Q

Wet food for easier swallowing
Dissolves food for tasting
Bicarbonate ions buffer acidic foods
bulemia—vomiting hurts the enamel on your teeth
Chemical digestion of starch begins with enzyme (salivary amylase)
Enzyme (lysozyme) —helps destroy bacteria
Protects mouth from infection with its rinsing action—1 to 1 and 1/2qts/day

A

Composition and Functions of Saliva

note on test
name 3 functions of saliva

7
Q

sight, smell, sounds, memory of food, tongue stimulation—rock in mouth
cerebral cortex signals the salivatory nuclei in brainstem—(CN 7 & 9)
parasympathetic nn. (CN 7 & 9)

A

increase salivation

8
Q

dry mouth when you are afraid

sympathetic nerves

A

stop salivation

9
Q

Myxovirus that attacks the parotid gland
Symptoms
inflammation and enlargement of the parotid
fever, malaise & sour throat (especially swallowing sour foods)
swelling on one or both sides
Sterility rarely possible in males with testicular involvement (only one side involved)
Vaccine available since 1967

A

mumps

10
Q

attached to hyoid, mandible, hard palate and styloid process

Papillae are the bumps—taste buds are protected by being on the sides of papillae

A

structure and function of tongue

11
Q

Crown
Neck
Roots
Pulp cavity

A

tooth structure

12
Q

hardest substance in body

calcium phosphate or carbonate

A

enamel

13
Q

calcified connective tissue

A

dentin

14
Q

bone-like

periodontal ligament penetrates it

A

cementum

15
Q

composition of teeth

A

enamel
dentin
cementum

16
Q

20 teeth that start erupting at 6 months

1 new pair of teeth per month

A

primary or baby teeth (dentition)

17
Q

32 teeth that erupt between 6 and 12 years of age
differing structures indicate function
incisors for biting
canines or cuspids for tearing
premolars & molars for crushing and grinding food

A

permanent teeth (dentition)

18
Q

breaks into pieces

mixes with saliva so it forms a bolus

A

mechanical digestion

19
Q

chemical digestion in the mouth

A

amylase

lingual lipase

20
Q

begins starch digestion at pH of 6.5 or 7.0 found in mouth

when bolus & enzyme hit the pH 2.5 gastric juices hydrolysis ceases

A

amylase

21
Q

secreted by glands in tongue

begins breakdown of triglycerides into fatty acids and glycerol

A

lingual lipase