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Anatomy > JAW AND TEETH > Flashcards

JAW AND TEETH Flashcards

1
Q

What are some functions of the mouth- not related to GI functions

A

Threat, carrying, vocalization

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2
Q

which tongue papillae is for taste?

A

fungiform
vallate
foliate

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3
Q

What are some functions of salivary glands?

A 
mechanical breakdown of food
protease-
allows to taste food
antibacterial
lubrication
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4
Q

what protease is present in saliva that helps with breakdown of carbs

A

Ptyalin- alpha amylase- starts the carb digestion

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5
Q

what happens to saliva when para or sympathetic systems fire?

A

Parasympathetic- saliva production goes up

sympathetic -saliva production goes down

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6
Q

mastication equals the

A

physical processing of food

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7
Q

what does the masticatory apparatus include?

A

teeth- non GI function
jaw & jaw joints -support teeth and APPLY muscle force to teeth
muscles of mastication/jaw muscles- PROVIDE the force used for oral processing of food

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8
Q

what are the 3 mineralized tissues of the tooth?

A

Enamel
Dentine
Cement

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9
Q

ENAMEL

A

Acellular, cant be repaired on its own
formed by ameloblast
covers anatomical crown

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10
Q

Dentine

A

formed by odontoblast
~ 70-80 % hydroxyapatite
living tissue
Mineralized

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11
Q

Cement

A 
mineralized
cellular or acellular
provides an attachment point for the periodontal ligament
produced by cementoblast
~50-65% hydroxyapatite
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12
Q

nerves and vessels enter the pulp or tooth through the

A

root canal

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13
Q

pulp

A

where odontoblast live
contains vessels, nerves, CT, lymphatics
if the pulp dies then the tooth is dead

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14
Q

periodontal ligament

A

lies outside of the tooth
anchors down the tooth to the alveolus
supports tooth agasint bite force

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15
Q

gingiva

A

derived from oral mucosa
attached- to the jaw bone or cement tissue of the tooth
free- overlaps the crown and forms a gingival pocket

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16
Q

whats the difference between anatomical crown and clinical crown?

A

Clinical crown-part that sticks out, can be seen- visible above the gums

anatomical- the crown is covered by enamel

17
Q

what is ESSENTIAL for tooth eruption

A

dental follicle

18
Q

enamel continue to grow throughout life, no root, has a wide pulp cavity

adult teeth do not have roots but the deciduous ones do

A

what is hypselodont?

19
Q

what type of tooth attachment do mammals have?

A

gomphodont, alveoli fit tooth tightly

20
Q

what are the two types of alveolar septum?

A

inter-alveolar septum
and
inter radicular septum

21
Q

interalveolar septum

A

between teeth

22
Q

septums between roots

A

inter radicular septum

23
Q

Tooth shape varies along the jaw

A

what is heterodont dentition?

24
Q

teeth are similar along the jaw?

such as dolphins!

A

what is homodont dentition?

25
Q

no teeth present- such as in birds

A

what is adontia?

26
Q

this is where there are missing teeth due to pathology

A

edentulous

27
Q

teeth are replaced multiple times throughout life, such as in sharks or crocodiles

A

what is polyphyodont

28
Q

teeth are replaced once throughout the life

such as in mammals

A

diphyodont

29
Q

what is the mandibular symphysis?

A

joint between the two mandible-this is a true symphysis

30
Q

what are the adductor jaw muscles

A

masseter - rostral and lateral
pterygoid- rostral and medial
temporalis -dorsal and caudal

31
Q

what the jaw abductor muscle?

A

digastricus - CN V and CN VII

32
Q

What muscles do carnivores and omnivores use primarily

A

temporalis

33
Q

What muscles do herbivores and rodents use primarily

A

masseter

34
Q

crown height < or = to root

A

low crown- brachyodont

35
Q

]

abbrasive food

crown&raquo_space; root

most of the crown is within the alveolus

A

high crown - hypsodont

Anatomy (3 decks)

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