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NBDHE > Anatomy > Flashcards

Anatomy Flashcards

1
Q

Buccinator

A

Assists in chewing; assists the muscles of mastication

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2
Q

What nerve are the muscles of facial expression innervated by

A

7th (VII) facial nerve, blood supply from facial artery

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3
Q

Muscles of mastication and innervation

A

Masseter, temporalis, medial pterygoid, lateral pterygoid, innervated by mandibular division of 5th cranial nerve (V3) with blood supply from maxillary artery

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4
Q

What can become enlarged in patients who habitually clench or grind (bruxism)

A

Masseter

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5
Q

What muscle of mastication is most likely affected by direct trauma to the TMJ

A

Lateral pterygoid

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6
Q

Action of suprahyoid and infrahyoid

A

Supra: Swallowing
Infra: Swallowing and speech

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7
Q

Intrinsic vs extrinsic

A

Intrinsic: Shapes the tongue
Extrinsic: Movement (geniglossus protrudes, styloglossus retracts, hyoglossis depresses)

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8
Q

Action of pulmonary artery

A

Carry deoxygenated blood to lungs

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9
Q

Parotid gland

A

Most associated with tumors, largest, 25% serous saliva produced, facial nerve passes through but does not innervate it, Stensen’s duct

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10
Q

Submandibular

A

Most common to get sialoliths, 2nd largest, produces 60-65% of serous and mucous saliva, whartons duct

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11
Q

Sublingual

A

Smallest, produces 10% of mucous and serous, bartholins duct

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12
Q

The cranial nerves

A

I) Olfactory
II) Optic
III) Oculomotor
IV) Trochlear
V) Trigeminal
VI) Abducens
VII) Facial
VIII) Vestibulocochlear
IX) Glossopharyngeal
X) Vagus
XI) Accessory
XII) Hypoglossal
Oh Oh Oh To Take A Family Vacation, Go Vegas After Hours

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13
Q

Cranial nerves mnemonic

A

S= Sensory
M= Motor
B= Both
Some Say Marry Money But My Brother Says Bad Business Marry Money

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14
Q

Tooth eruption patterns

A

6 months- Mandibular central incisors
6 years- First permanent molars
12 years- 2nd permanent molars

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15
Q

Hyperdontia

A

Extra teeth

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16
Q

Mesiodens

A

Peg like supernumerary teeth, most often seen at midline

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17
Q

Hypodontia

A

Absence of one or more teeth

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18
Q

Gemination

A

Large tooth resulting from splitting of single tooth germs that attempt to form two teeth

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19
Q

Dens in dente

A

Tooth within a tooth

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20
Q

Dilaceration

A

Abnormal distortion of crown or root by trauma during formation

21
Q

Hutchinsons incisors

A

Syphilitic incisors

22
Q

Mulberry molars

A

Mottled mulberry shaped molars associated with congenital syphilis

23
Q

Enamel dysplasia

A

Abnormal enamel development

24
Q

Which tooth as a non functional lingual cusp

A

Mandibular first premolar

25
Q

Which tooth has the cusp of carabelli and an oblique ridge

A

Maxillary first molar

26
Q

Which tooth has the most prominent CEJ

A

Maxillary Central incisor

27
Q

Which tooth has a prominent palatogingival groove

A

Maxillary Lateral incisor

28
Q

Which tooth has the longest root

A

Maxillary Canine

29
Q

Which premolar has two roots with prominent mesial root concavity

A

Maxillary First premolar

30
Q

Which premolar only has 1 root

A

Maxillary Second premolar

31
Q

Which tooth has three roots in which the palatal root is the longest?

A

Maxillary first molar

32
Q

Where are enamel pearls most commonly found

A

Maxillary molars in furcation areas

33
Q

Which teeth have very narrow facial and lingual surfaces and frequently have shallow root concavities on proximal surfaces

A

Mandibular central and lateral incisors

34
Q

Which tooth usually has a single root but is sometimes bifurcated into a facial and lingual root

A

Mandibular canine

35
Q

Which tooth may have a root concavity deep on the distal surface

A

Mandibular First premolar

36
Q

Which tooth has a mesial root that is widest and strongest but a distal root that is narrower?

A

Mandibular first molar

37
Q

Mitosis vs meiosis

A

Mitosis- Replication of somatic cells (anything not reproductive
Meiosis- Replication of germ cells (Reproductive)

38
Q

Enamel histology

A

Hardest tissue in body, 96-97% inorganic, striae of retzius are incremental growth lines of mineralization

39
Q

Cementum histology

A

Calcified tissue covering root dentin,, mineralization is most like bone

40
Q

Dentin histology

A

Forms the bulk of tooth tissue, 70% inorganic , 20% organic

41
Q

Pulp Histology

A

Center of tooth made up of living connective tissue and cells, primary function is to produce dentin, contains the nerve plexus of raschkow (pain perception)

42
Q

Where is masticatory (keratinized) stratified squamous epithelium found

A

Dorsum of tongue, hard palate, and attached gingiva

43
Q

Where is lining mucosa (non keratinized) stratified squamous epithelium found

A

Buccal mucosa, labial mucosa, alveolar mucosa

44
Q

Is the sucular and col keratinized or non keratinized?

A

Non keratinized

45
Q

Palatal development

A

Forms between 4th and 6th weeks of embryonic development. Primary palate is formed between 6th and 12th weeks of embryonic development. Fusion is anterior to posterior

46
Q

What is the tooth germ made of?

A

The enamel organ, dental papilla, dental sac/follicle
Enamel organ produces enamel
Dental papilla produces dentin
PDL, cementum and bone originate from dental sac/follicle

47
Q

Tooth development stages

A

1) Initiation/bud stage
2) Cap stage
3) Bell stage/Differentiation

48
Q

Formative cells

A

Ameloblasts= Enamel
Odontoblasts= dentin
Cementoblasts= Cementum
Osteoblasts= alveolar process

49
Q

Clast Vs Blast

A

Blast= formative cells
Clast= Resorptive cells

NBDHE (3 decks)

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