Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Histology > EXAM 3 Starts: Oral Cavity and Tooth development- Part 1 > Flashcards

EXAM 3 Starts: Oral Cavity and Tooth development- Part 1 Flashcards

1
Q

what is the oral cavity bound with superiorly

A

hard and soft palate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the oral cavity bound by inferiorly

A

tongue and floor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what is the oral cavity bound by anterior and laterally

A

teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the oral cavity bound by posteriorly

A

oropharynx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what is the vestibule

A

area enclosed between lips and teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what is the vermillion border

A

transitional zone between external haired skin and internal oral mucosa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

what is the color of the lips derived from

A

highly vascular dermis and thin overlying keratinized epidermis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what glands do lips lack

A

sweat and sebaceous glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

why are lips highly sensitive

A

lots of sensory innervation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what is the function of the oral cavity

A
  • ingestion, fragmentation, and moistening of food
    -speech, facial expression, sensory perception and respiration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is mastication

A

cutting, chewing, grinding of food by occlusal surfaces of teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is mastication assisted by

A

lips, tongue, and salivary glands that form a bolus for swallowing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is another word for swallowing

A

deglutition

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what are the three types of oral mucosae

A

-lining mucosa
-masticatory mucosa
- specialized mucosa

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

describe the lining mucosa and where its found

A

non-keratinized mucosa found on inner cheeks, floor of mouth inferior surface of tongue and soft palate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what does the lining mucosa lack

A

stratum corneum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

where is the masticatory mucosa

A

in areas of high abrasion such as gingiva and hard palate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what type of epithelium lines the masticatory mucosa

A

keratinized or parakeratinized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

where is specialized mucosa located and what type of epithelium

A

restricted to dorsal surface of the tongue, keratinized

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

describe the tongue

A

muscular organ composed of interlacing skeletal muscle fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

what is function of the tongue

A

manipulation of food and sensation of taste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

what glands are on the tongue and where

A

accessory salivary glands within lamina propria and between muscle layers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

what cranial nerves innervate the tongue and what are their functions

A

-5 - general sensation anterior to sulcus terminalis
-7 -taste
-9- general sensation and taste posterior to sulcus terminalis
-10 - taste, motor
-12- motor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what is the tongue supported by

A

frenulum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

what is the frenulum

A

thin band of connective tissue anchoring tongue to floor of mouth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

what is the anterior 2/3 of the tongue derived from embryologically

A

ectoderm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

what is the posterior 1/3 of the tongue derived from embryologically

A

pharynx (mesoderm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

what is the anterior 2/3 and posterior 1/3 of the tongue separated by

A

sulcus terminalis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

what epithelium covers the anterior 2/3 of the tongue and posterior 1/3 of the tongue?

A

anterior 2/3 - keratinized stratified squamous epithelium
posterior 1/3 - non keratinized stratified squamous epithelium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

what are the 4 types of lingual papillae

A

-filiform papillae
- fungiform papillae
- foliate papillae
- circumvallate papillae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

describe filiform papillae

A

keratinized, short bristles, distributed in parallel rows

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

what is the most numerous papillae

A

filiform

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

what is the function of filiform papillae

A

lacks taste buds so tactile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

describe fungiform papillae and where theyre located

A

mushroom shaped, scattered among filiform papillae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

where are the taste buds on fungiform papillae located

A

dorsal surface

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

describe foliate papillae and where theyre located

A

located in furrows/ridges on lateral portion of the tongue

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

where are taste buds on foliate papillae located

A

laterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

what salivary glands are located at the base of foliate papillae

A

von-Ebners glands

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

describe circumvallate papillae

A

row of 8-12 large dome shaped papillae

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

where are circumvallate papillae found

A

immediately anterior to sulcus terminalis

41
Q

what are circumvallate papillae surrounded by

A

moat-like sulcus containing large numbers of taste buds laterally

42
Q

what salivary glands are associated at the base of circumvallate papillae

A

von Ebner’s glands

43
Q

where are taste buds located

A

on papillae of tongue (except filiform), palate, pharynx, epiglottis

44
Q

what is the function of taste buds

A

changes in taste with age

45
Q

what do taste buds contain

A

oval shaped consisting of 20-30 spindle shaped central taste cells containing terminal taste hairs

46
Q

what is another word for taste cells

A

gustatory cells

47
Q

where are taste hairs located

A

surface of cell into a central taste pore

48
Q

what are taste hairs covered with

A

glycoprotein coat and surrounded by sustentacular cells and basal cells

49
Q

are taste cells replaced when lost

A

yes

50
Q

what are taste cells associated with

A

myelinated Nerve endings

51
Q

what cranial nerves innervate taste buds

A

7,9, and 10

52
Q

how many receptors for taste does a taste cell have

A

receptors for only one taste

53
Q

how many receptors for taste does a taste bud have

A

taste buds contain a mixture of taste cells

54
Q

where are bitter taste receptors located

A

circumvallate papillae

55
Q

where are umami taste receptors located

A

circumvallate papillae

56
Q

what are umami flavored foods

A

asparagus, tomatoes, beef, cheese and MSG

57
Q

what AA’s do umami taste receptors detect

A

glutamate and aspartate

58
Q

what do tasters taste with PTC strips

A

bitter

59
Q

what is hypogeusia

A

decreased ability to detect taste

60
Q

what is type 1 familial dysautonomia

A

hereditary condition that results in total absence of taste buds

61
Q

what is the lingual tonsil and where is it located

A

lymphoid tissue mass located in underlying mucosa in caudal 1/3

62
Q

what is the structure and function of lingual tonsils similar to

A

palatine and pharyngeal tonsils

63
Q

what is weldeyers ring

A

all tonsils located in nasopharynx

64
Q

what is the function of Waldeyers ring

A

protects respiratory and digestive tract

65
Q

what is the uvula

A

extension of posterior free margin of soft palate

66
Q

what is the central core of the uvula made of

A

skeletal muscle

67
Q

what is the uvula covered with

A

lining mucosa with IG numbers of submucosal glands

68
Q

what is the function of the uvula

A

prevents food from entering nasal cavity during swallowing

69
Q

where are salivary glands distributed

A

throughout submucosa of oral cavity

70
Q

what are the 3 pairs of salivary glands

A

parotid, submandibular, and sublingual

71
Q

describe the parotid gland and its location

A

largest gland, located on cheeks, almost completely serous

72
Q

where is the parotid duct located

A

opens with vestibule, opposite upper 2nd molar

73
Q

what is another name for the parotid duct

A

stenson’s duct

74
Q

where is the sublingual gland located and what type of gland is it

A

below tongue, mostly mucous

75
Q

where is the submandibular gland located and what type of gland is it

A

located inferior and medial to ramus of mandible, mixed gland

76
Q

where is submandibular duct opening and whats another name for it

A

opens at sublingual caruncle and called Wharton’s duct

77
Q

what are the accessory glands

A

lingual, labial, buccal, molar, palatine

78
Q

describe the morphology of salivary glands

A

compound tubuloacinar glands

79
Q

what is the secretory unit of salivary glands

A

acinus

80
Q

what surround acini and what do they do

A

myoepithelial cells aid in secretion of saliva into ducts

81
Q

what types of acini are in salivary glands

A

serous or mucous

82
Q

what are serous acini of mixed glands often in the form of

A

demilunes

83
Q

what are intercalated ducts lined by and what do they do

A

simple cubdoidal epithelium - secrete HCO3 and resorb Cl

84
Q

what do interacalated ducts empty into

A

larger striated ducts

85
Q

what is the epithelium of striated ducts

A

simple cuboidal to columnar epithelium

86
Q

what do larger striated ducts empty into

A

larger excretory ducts

87
Q

what do larger striated ducts possess

A

basal striations, due to folding of plasma membrane

88
Q

what is the function of striated ducts

A

resorb Na, secrete K into saliva, secrete lysozyme and IgA

89
Q

what epithelium line excretory ducts

A

stratified cuboidal or pseudostratifed columnar

90
Q

what does sympathetic stimulation do

A

inhibits aqueous secretion which results in thick, viscous saliva rich in protein

91
Q

what does parasympathetic stimulation do

A

production of lots of watery saliva

92
Q

what does saliva contain

A

water, glycoproteins and proteins, enzymes and antibodies

93
Q

what enzymes are in saliva and what is their function

A
  • amylase - converts starch to sugar
  • lysozyme- antibacterial
94
Q

what do antibodies in saliva secrete

A

Iga and inorganic ions such as Ca, P and Cl

95
Q

what are the concentrations of K, Na, and bicarbonate in saliva

A

high in K, low Na, high in bicarbonate

96
Q

what is the average saliva production in humans per day

A

600-1500 ml/day

97
Q

what are the functions of saliva

A

-moistens oral mucosa and dry food
-provides carrier medium for sense of taste
- buffering via high bicarbonate content
- digestion of carbohydrates via amylase
- immunologic function - secretion of salivary IgA
- control of bacterial flora

98
Q

how does control of bacterial flora in saliva work

A
  • proteins in saliva cover teeth with acquired pellicle
  • contains antibodies that prevent tooth decay
  • decreased salivary production exacerbates tooth decay

Histology (27 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions