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OT 716 - Unit III > Lecture 31 > Flashcards

Lecture 31 Flashcards

1
Q

Philtrum

A
  • lip dimple

- created by depressor septa muscles

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2
Q

Superior and Inferior Labial frenulum

A

attaches lip to gum

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3
Q

Lips are lined with…

A
  • skin

- mucous

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4
Q

Major muscle surrounding lips

A

obicularis oris

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5
Q

Mouth extends from…

A

lips to palatoglossal fold

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6
Q

Mouth has two spaces/cavities

A
  • oral cavity

- buccal cavity

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7
Q

Oral cavity

A

space medial to - and between - the teeth, and contains a tongue

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8
Q

Buccal cavity

A
  • space between cheek, teeth, and gums
  • buccinator makes up lateral wall of buccal cavity
  • posteriorly attached to pterygomandibular raphe
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9
Q

Roof and floor of mouth

A
  • roof: hard/soft palates

- floor: tongue

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10
Q

What covers sublingual glands?

A

sublingual fold

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11
Q

General sensory innervation of mouth is supplied by…

A

branches of trigeminal nerve (CN VII): V2 & V3

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12
Q

Lingual Frenulum

A

attachment of tongue to bottom of mouth

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13
Q

Teeth of children

A

20 deciduous teeth

  • 4 incisors (each jaw)
  • 2 canines (each jaw)
  • 4 molars (each jaw)
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14
Q

Teeth of adult

A

32 permanent

  • 4 incisors (each jaw)
  • 2 canines (each jaw)
  • 4 premolars (each jaw)
  • 6 molars (each jaw)
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15
Q

Parts of the tongue

A
  • body (blade)
  • root
  • median furrow
  • foramen cecum
  • papillae
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16
Q

Where did the thyroid gland begin?

A

Foramen cecum

17
Q

Types of papillae on tongue

A
  • filiform (small, cover anterior portion)
  • fungiform (found on sides and tip of tongue)
  • circumvalate (large, 8-12 in number in V-shape in front of foramen cecum)
  • foliate (sides of tongue)
18
Q

Intrinsic tongue muscles

A
  • longitudinal, transverse, & vertical

- produce changes in shape

19
Q

Extrinsic tongue muscles (w/ motor innervation)

A
  • genioglossus (CN XII)
  • hyoglossus (CN XII)
  • styloglossus (CN XII)
  • palatoglossus (CN X)
20
Q

Taste and sensation innervation of tongue

A
  • facial nerve (CN VII: anterior 2/3 for taste)
  • glossopharyngeal (CN IX: posterior 1/3 for taste and general sensation)
  • trigeminal (CN V: anterior 2/3 for general sensation)
21
Q

Three salivary glands

A
  • parotid
  • submandibular
  • sublingual
22
Q

Parotid gland

A

drains into mouth via parotid duct

23
Q

Submandibular gland

A

drains into mouth at sublingual caruncle via submandibular duct

24
Q

Sublingual gland

A

drains into mouth (BELOW tongue) via numerous sublingual ducts

25
Q

Hard palate: formation

A
  • maxillary palatine processes

- horizontal plate of the palatine bone

26
Q

Hard palate: general sensation innervation

A

CN V (V2) –> greater palatine nerve

27
Q

Soft palate: formation

A
  • tensor veli palatini (CN V: V3 –> branch to medial pterygoid)
  • levator veli palatini (CN X)
  • palatopharyngeus (CN X)
  • palatoglossus (CN X)
  • musculus uvuli (CN X)
28
Q

Soft palate: anatomical landmarks

A
  • palatoglossal fold (arch)
  • palatopharyngeal fold (arch)
  • uvula
  • palatine tonsils
29
Q

Pharynx: three parts

A
  • nasopharynx
  • oropharynx
  • laryngopharynx
30
Q

Nasopharynx

A

behind nasal cavities; above soft palate

  • pharyngeal tonsil
  • opening of auditory tube
  • tubal elevation w/ tubal tonsils
  • innervated by CN V
31
Q

Oropharynx

A

behind oral cavity

  • palatoglossal/palatopharyngeal folds
  • tonsillar recess (between folds)
  • palatine and lingual tonsils
  • innervated by CN IX
32
Q

Laryngopharynx

A
  • begins at epiglottis
  • connects to esophagus
  • innervated by CN X
33
Q

Piriform recess

A

natural trap for food in laryngopharynx

34
Q

Pharynx: primary muscles

A 
pharyngeal constrictors
- superior
- middle
- inferior
(all innervated by pharyngeal plexus of CN X)
35
Q

Pharynx: other muscles

A
  • stylopharyngeus (CN IX)
  • salpingopharyngeus (CN X)
  • palatopharyngeus (CN X)
36
Q

During swallowing…

A
  • pharynx is elevated
  • constrictors then push bolus down pharynx into esophagus
  • pharynx is then depressed
37
Q

Waldeyer’s tonsillar ring

A

tonsillar tissue surrounding entrance to pharynx

OT 716 - Unit III (26 decks)

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